Question

A hollow cylindrical copper pipe is 15 cm long. Its outer and inner diameter are 12 and 8 resp. It is melted to form solid cone of height 4cm. Find the radius of the base of the cone

Answer 1

Answer:

Radius equal to 15 cm for this que

Answer 2

Step-by-step explanation:

vol. of hollow cylinder = π h (R^2 - r^2)