Question

Find the surface area and volume of a sphere of radius 1.4 cm.

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Answer 1

Radius, r = 1.4 cm

Now,

we have the formula for,

surface area of a sphere = 4πr^2

= 4 × 3.142 × (1.4)^2

= 12.568 × 1.96

= 24.63328 cm^2

And,

volume of a sphere = 4/3 π r^3

= 4/3 × 3.142 × (1.4)^3

= 11.49 cm^3

Therefore, the surface area of a sphere is 24.633 cm^2

and the volume of a sphere is 11.49 cm^3