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Mar 3, 2015

How many meters of cloth 5m wide will be required to make a conical tent,the radius of whose base is 7m and whose height is 24m?

How many meters of cloth 5m wide will be required to make a conical tent,the radius of whose base is 7m and whose height is 24m?

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 Given, r = 7 m h = 24 m ∴ slant height l = √(r2 + h2) = √(49 + 576) = √625 = 25 m CSA of the cone = πrl = 22/7 x 7 x 25 = 550 m2 Area of the cloth used = 550 m2 Given, width of the cloth = 5 m Length of the cloth used = Area/Width = 550 / 5 = 110 m.

Raghunath Reddy

Member since Apr 11, 2014

Given, r = 7 m h = 24 m ∴ slant height l = √(r2 + h2) = √(49 + 576) = √625 = 25 m CSA of the cone = πrll = 22/7 x 7 x 25 = 550 m2 Area of the cloth used = 550 m2 Given, width of the cloth = 5 m Length of the cloth used = Area/Width = 550 / 5 = 110 m.
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