Answer :

Given: surface area of a sphere is 616 cm2


Surface area of the sphere is: 4 × π × r2 (where r is radius of sphere)


4 × π × r2 = 616 cm2


r2 = = = 49


r = √49 = 7 cm


Diameter = 2 × r = 2 × 7 = 14cm

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