# The surface area

Let the radius of sphere be ‘r’ cm

Surface area of sphere = 2464 cm2

Surface area of sphere is given by 4πr2

4πr2 = 2464 cm2

4 × 22/7 × r2 = 2464 cm2

r2 = 2464 × 1/4 × 7/22 cm2 = 196 cm2

r = 14 cm

Let the radius of new sphere be r’ cm

r’ = 2r

r’ = 2 × 14 cm = 28 cm

Surface area of new sphere = 4πr’2

= 4 × 22/7 × 282 cm2

= 9856 cm2

Surface area of new sphere is 9856 cm2.

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