Answer :

We have,

The radius of the cone (r) = 5cm and

The height of the cone (h) = 20cm

Let the radius of the sphere be R;


Volume of sphere = Volume of cone

πR3 = πr2h

4R3 = 5 × 5 × 20

R3 = = 125 cm

R = 5 cm

Diameter of the sphere = 2R = 2 x 5 = 10 cm

So, the diameter of the sphere is 10 cm

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