Question

an open cone has a slant height of 5m and curved surface area of 251m^2.find the radius of the circular base

Answer 1

Answer:

So , The Radius of the Cone is 15. 9 m

Answer 2

Given :

Slant Height of Cone = 5m.

C.S.A of Cone = 251m².

To Find :

Radius of Base of Cone.

Solution :

Slant height = 5m

Using Formula :

C.S.A of Cone = πrl

Putting Values :

251= 7 22 ×r×5

251*7=110r

251×7=110r

1757=110r

r= 110/1757

r=15.9m

So , The Radius of the Cone is 15.9 m..

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C.S.A of Cone = πrl

T.S.A of Cone = πrl(l+r)

Volume of Cone = 1/3 πr²h

Slant Height of Cone = √(r)²+(h)²

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