Question

A cone is 8.4 cm high and the radius of its base is 2.1 cm. It is melted and recast into a sphere. Find
the radius of the sphere.​

Answer 1

Answer:

cone's dimensions

height = 8.4cm

radius = 2.1cm

ATQ volume of cone = volume of sphere

1/3.pi.cone's radius².height=4/3.pi.sphere.radius³

8.4 x 2.1 x 2.1= 4 x radius³

radius ³ = 2.1 x 2.1 x 2.1

thus radius of sphere is 2.1cm

hope this will help you