1.

Find the volume and surface area of a sphere whose radius is 5 m.

Answer»

It is given that

Radius of the sphere = 5cm

We know that

Volume of the sphere = 4/3 πr3

By substituting the values

Volume of the sphere = 4/3 × (22/7) × 53

So we get

Volume of the sphere = 523.81 m3

We know that

Surface area of the sphere = 4 πr2

By substituting the values

Surface area of the sphere = 4 × (22/7) × 52

So we get

Surface area of the sphere = 314.28 m2



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