A cylinder with base radius of 8 cm and height of 2 cm is melted to form a cone of height 6 cm. The radius of the cone is

(a) 4 cm

(b) 5 cm

(c) 6 cm

(d) 8 cm

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Solution

Volume of cylinder

Let r be the radius of cone

But,

The volume of cone = volume of cylinder

Hence, Radius of cone = 8 cm.

Hence, the correct answer is choice (d).

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A cylinder with base radius of 8 cm and height of 2 cm is melted to form a cone of height 6 cm. The radius of the cone is (a) 4 cm (b) 5 cm (c) 6 cm (d) 8 cm

Volume of cylinder Let r be the radius of cone But, The volume of cone = volume of cylinder Hence, Radius of cone = 8 cm. Hence, the correct answer is choice (d).

A cylinder with base radius of 8 cm and height of 2 cm is melted to form a cone of height 6 cm. The radius of the cone is

(a) 4 cm

(b) 5 cm

(c) 6 cm

(d) 8 cm

Volume of cylinder

Let r be the radius of cone

But,

The volume of cone = volume of cylinder

Hence, Radius of cone = 8 cm.

Hence, the correct answer is choice (d).