Question

The radius and height of a cone are in the ratio 3 : 4. If its volume is 301.44 cm3, then its

Answer 1

Answer:

Let the radius of cone be 3x cm and the height 4x cm, then

Volume of cone = 1/3πr2h

⇒ 1/3π(3x)2 (4x) = 301.44

⇒   x3 = 8 ⇒ x = 2

Thus, radius of cone is 6 cm and height 8 cm.

Now, slant height of cone  

root of ( 6 square + 8 square )

10 cm