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34-606: The Hyderabad Golf club is an 18-hole golf course located in a historic setting in and around Golconda Fort . A project promoted by the Telangana State Tourism Development Corporation and the Hyderabad Golf Association. Hyderabad's first and only public golf course. Hyderabad Golf club was formed in 1992 with the objective of building a Golf Course to International Standards accessible to civilian residents of

68-526: A , {\displaystyle 2\pi b\leq C\leq 2\pi a,} π ( a + b ) ≤ C ≤ 4 ( a + b ) , {\displaystyle \pi (a+b)\leq C\leq 4(a+b),} 4 a 2 + b 2 ≤ C ≤ π 2 ( a 2 + b 2 ) . {\displaystyle 4{\sqrt {a^{2}+b^{2}}}\leq C\leq \pi {\sqrt {2\left(a^{2}+b^{2}\right)}}.} Here

102-603: A circle is related to one of the most important mathematical constants . This constant , pi , is represented by the Greek letter π . {\displaystyle \pi .} Its first few decimal digits are 3.141592653589793... Pi is defined as the ratio of a circle's circumference C {\displaystyle C} to its diameter d : {\displaystyle d:} π = C d . {\displaystyle \pi ={\frac {C}{d}}.} Or, equivalently, as

136-500: A 10 km (6.2 mi) long outer wall with 87 semicircular bastions (some still mounted with cannons ), eight gateways, and four drawbridges , with a number of royal apartments and halls, temples, mosques, magazines, stables, etc. inside. The lowest of these is the outermost enclosure entered by the "Fateh Darwaza" (Victory gate, so called after Aurangzeb ’s triumphant army marched in through this gate) studded with giant iron spikes (to prevent elephants from battering them down) near

170-489: A circle is the distance around it, but if, as in many elementary treatments, distance is defined in terms of straight lines, this cannot be used as a definition. Under these circumstances, the circumference of a circle may be defined as the limit of the perimeters of inscribed regular polygons as the number of sides increases without bound. The term circumference is used when measuring physical objects, as well as when considering abstract geometric forms. The circumference of

204-461: A period of 62 years, the mud fort was expanded by the first three Qutb Shahi sultans into the present structure: a massive fortification of granite extending around 5 km (3.1 mi) in circumference . It remained the capital of the Qutb Shahi dynasty until 1590 when the capital was shifted to Hyderabad . The Qutb Shahis expanded the fort, whose 7 km (4.3 mi) outer wall enclosed

238-593: A stone hilltop outpost — later known as Golconda fort — to defend their western region. The fort was later developed into a fortified citadel in 1518 by Sultan Quli of the Qutb Shahi Empire and the city was declared the capital of the Golconda Sultanate . The Bahmani kings took possession of the fort after it was made over to them by means of a sanad by the Rajah of Warangal . Under

272-517: A vault where the famous Koh-i-Noor and Hope diamonds were once stored along with other diamonds. Golconda is renowned for the diamonds found on the south-east at Kollur Mine near Kollur, Guntur district , Paritala and Atkur in Krishna district and cut in the city during the Kakatiya reign . At that time , India had the only known diamond mines in the world. Golconda was the market city of

306-492: Is C e l l i p s e ∼ π 2 ( a 2 + b 2 ) . {\displaystyle C_{\rm {ellipse}}\sim \pi {\sqrt {2\left(a^{2}+b^{2}\right)}}.} Some lower and upper bounds on the circumference of the canonical ellipse with a ≥ b {\displaystyle a\geq b} are: 2 π b ≤ C ≤ 2 π

340-536: Is about 900 to 1,000 years old, dating back to early Kakatiya period . A Mahankali temple is located in the vicinity, within Golconda fort. The fort also contains the tombs of the Qutub Shahi kings . These tombs have Islamic architecture and are located about 1 km (0.62 mi) north of the outer wall of Golconda. They are encircled by gardens and numerous carved stones. The two individual pavilions on

374-457: Is also the number of radians in one turn . The use of the mathematical constant π is ubiquitous in mathematics, engineering, and science. In Measurement of a Circle written circa 250 BCE, Archimedes showed that this ratio (written as C / d , {\displaystyle C/d,} since he did not use the name π ) was greater than 3 ⁠ 10 / 71 ⁠ but less than 3 ⁠ 1 / 7 ⁠ by calculating

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408-542: Is an extension of Golconda fort which was turned into the Hyderabad Golf Club despite resistance from farmers who owned the land and various NGOs within the city. The ramparts of the new fort start after the residential area with many towers and the Hatiyan ka Jhad ("Elephant-sized tree")—an ancient baobab tree with an enormous girth. It also includes a war mosque. These sites are under restrictive access to

442-490: Is no general formula for the circumference of an ellipse in terms of the semi-major and semi-minor axes of the ellipse that uses only elementary functions. However, there are approximate formulas in terms of these parameters. One such approximation, due to Euler (1773), for the canonical ellipse, x 2 a 2 + y 2 b 2 = 1 , {\displaystyle {\frac {x^{2}}{a^{2}}}+{\frac {y^{2}}{b^{2}}}=1,}

476-593: The Bahmani Sultanate , Golconda slowly rose to prominence. Sultan Quli Qutb-ul-Mulk (r. 1487–1543), sent by the Bahmanids as a governor at Golconda, established the city as the seat of his governance around 1501. Bahmani rule gradually weakened during this period, and Sultan Quli (Quli Qutub Shah period) formally became independent in 1518, establishing the Qutb Shahi dynasty based in Golconda. Over

510-400: The Golconda Sultanate . Because of the vicinity of diamond mines, especially Kollur Mine , Golconda flourished as a trade centre of large diamonds known as Golconda Diamonds . Golconda fort is currently abandoned and in ruins. The complex was put by UNESCO on its "tentative list" to become a World Heritage Site in 2014, with other forts in the region, under the name Monuments and Forts of

544-663: The 11th century out of mud walls. It was ceded to the Bahmani Kings from Musunuri Nayakas during the reign of the Bahmani Sultan Mohammed Shah I , during the first Bahmani-Vijayanagar War . Following the death of Sultan Mahmood Shah, the Sultanate disintegrated and Sultan Quli, who had been appointed as the Governor of Hyderabad by the Bahmani Kings, fortified the city and made it the capital of

578-610: The Deccan Sultanate (despite there being a number of different sultanates). The origins of the Golconda fort can be traced back to the 11th century. It was originally a small mud fort built by Pratāparudra of the Kakatiya Empire . The name Golconda is thought to originate from the Telugu గొల్ల కొండ Golla koṇḍa for "Shepherd's hill". It is also thought that Kakatiya ruler Ganapatideva 1199–1262 built

612-541: The Gemological Institute of America (GIA), have come from the mines in and around the Golconda region. Many famed diamonds are believed to have been excavated from the mines of Golconda, such as: By the 1880s, "Golconda" was being used generically by English speakers to refer to any particularly rich mine, and later to any source of great wealth. During the Renaissance and the early modern eras,

646-648: The Qutb Shahi dynasty at Golconda fort (also known as the Diamond Capitol of its time) and was home to the Kollur Mine. The ruler of Golconda was the well entrenched Abul Hasan Qutb Shah . Golconda fort is listed as an archaeological treasure on the official "List of Monuments" prepared by the Archaeological Survey of India under The Ancient Monuments and Archaeological Sites and Remains Act. Golconda consists of four distinct forts with

680-910: The Second Recruit Training Centre for the Regiment of Artillery . Golconda Artillery Centre is located in and around the Golconda fort. The Golconda centre has three training regiments and presently trains 2900 recruits at a time. The Golconda fort and other Qutb Shahi dynasty Monuments of Hyderabad (the Charminar , and the Qutb Shahi Tombs) were submitted by the Permanent Delegation of India to UNESCO in 2010 for consideration as World Heritage Sites . They are currently included on India's " tentative list ". Circumference The circumference of

714-416: The city. During the early seventeenth century a strong cotton-weaving industry existed in Golconda. Large quantities of cotton were produced for domestic and exports consumption. High quality plain or patterned cloth made of muslin and calico was produced. Plain cloth was available as white or brown colour, in bleached or dyed variety. Exports of this cloth was to Persia and European countries. Patterned cloth

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748-431: The diamond trade, and gems sold there came from a number of mines. The fortress-city within the walls was famous for diamond trade. Its name has taken a generic meaning and has come to be associated with great wealth. Some gemologists use this classification to denote the extremely rare Type IIa diamond, a crystal that essentially lacks nitrogen impurities and is therefore colorless; Many Type IIa diamonds, as identified by

782-412: The door has peacocks with ornate tails flanking an ornamental arched niche. The granite block lintel below has sculpted yalis flanking a disc. The design of peacocks and lions is typical of Hindu architecture and underlies this fort's Hindu origins. Jagadamba temple, located next to Ibrahim mosque and the king's palace, is visited by lakhs of devotees during Bonalu festival every year. Jagadamba temple

816-557: The endpoints of the major and minor axes. The circumference of an ellipse can be expressed exactly in terms of the complete elliptic integral of the second kind . More precisely, C e l l i p s e = 4 a ∫ 0 π / 2 1 − e 2 sin 2 ⁡ θ   d θ , {\displaystyle C_{\rm {ellipse}}=4a\int _{0}^{\pi /2}{\sqrt {1-e^{2}\sin ^{2}\theta }}\ d\theta ,} where

850-549: The metropolitan area of Hyderabad and its surroundings. The Hyderabad Golf Club is located just opposite the Qutb Shahi Tombs and shadow of the historic Golconda Fort An 18-hole, 6057 yard, Par 71 golf course, with water bodies and vast greens along with training facilities such as a Golf Academy, Driving Range, and a club house. In 2010, the Hyderabad Golf Club set up an illegal golf course within

884-733: The name "Golconda" acquired a legendary aura and became synonymous for vast wealth. The mines brought riches to the Qutb Shahis of Hyderabad State , who ruled Golconda up to 1687, then to the Nizam of Hyderabad , who ruled after the independence from the Mughal Empire in 1724 until 1948, when the Indian integration of Hyderabad occurred. The siege of Golconda occurred in January 1687, when Mughal Emperor Aurangzeb led his forces to besiege

918-471: The outer side of Golconda are built on a point which is quite rocky. The "Kala Mandir" is also located in the fort. It can be seen from the king's durbar (king's court) which was on top of the Golconda fort. The other buildings found inside the fort are: Habshi Kamans (Abyssian arches), Ashlah Khana, Taramati mosque, Ramadas Bandikhana, Camel stable, private chambers (kilwat), Mortuary bath, Nagina bagh, Ramasasa's kotha, Durbar hall, Ambar khana etc. Naya Qila

952-417: The perimeters of an inscribed and a circumscribed regular polygon of 96 sides. This method for approximating π was used for centuries, obtaining more accuracy by using polygons of larger and larger number of sides. The last such calculation was performed in 1630 by Christoph Grienberger who used polygons with 10 sides. Circumference is used by some authors to denote the perimeter of an ellipse. There

986-424: The premises of the historic Naya Qila , which has resulted in outrage among heritage activists. Against ASI rules, the golf course restricted tourists' entry to the fort. As of 2019, the course is still active. Golconda Golconda is a fortified citadel and ruined city located on the western outskirts of Hyderabad , Telangana , India. The fort was originally built by Kakatiya ruler Pratāparudra in

1020-532: The public because of the Golf Course. The tombs of the Qutub Shahi sultans lie about one kilometre north of Golconda's outer wall. These structures are made of beautifully carved stonework, and surrounded by landscaped gardens. They are open to the public and receive many visitors. It is one of the famous sight-seeing places in Hyderabad. Golconda Artillery Centre, Hyderabad, was raised on 15 August 1962 as

1054-439: The ratio of the circumference to twice the radius . The above formula can be rearranged to solve for the circumference: C = π ⋅ d = 2 π ⋅ r . {\displaystyle {C}=\pi \cdot {d}=2\pi \cdot {r}.\!} The ratio of the circle's circumference to its radius is equivalent to 2 π {\displaystyle 2\pi } . This

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1088-511: The south-eastern corner. An acoustic effect can be experienced at Fateh Darwazaan, a hand clap at a certain point below the dome at the entrance reverberates and can be heard clearly at the 'Bala Hisar' pavilion , the highest point almost a kilometer away. This worked as a warning in case of an attack. Bala Hissar Gate is the main entrance to the fort located on the eastern side. It has a pointed arch bordered by rows of scroll work. The spandrels have yalis and decorated roundels. The area above

1122-407: The upper bound 2 π a {\displaystyle 2\pi a} is the circumference of a circumscribed concentric circle passing through the endpoints of the ellipse's major axis, and the lower bound 4 a 2 + b 2 {\displaystyle 4{\sqrt {a^{2}+b^{2}}}} is the perimeter of an inscribed rhombus with vertices at

1156-533: Was made of prints which were made indigenously with indigo for blue, chay-root for red coloured prints and vegetable yellow. Patterned cloth exports were mainly to Java, Sumatra and other eastern countries. The fort finally fell into ruin in 1687 after an eight-month-long siege led to its fall at the hands of the Mughal emperor Aurangzeb , who ended the Qutb Shahi reign and took the last Golconda king, Abul Hassan Tana Shah , captive. The Golconda fort used to have

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