Q2 of 23 Page 1

Solve any four sub-questions:

The diameter of a sphere is 6 cm, Find the total surface area of the sphere. (π = 3.14)

Diameter of sphere = d = 6 cm

Radius = r = d/2 = 6/2 = 3 cm


total surface area of sphere = 4πr2


= 4×3.14×32


= 4×3.14×9


= 36×3.14


= 113.04 cm2


Therefore total surface area of sphere = 113.04 cm2


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