The total surface area of a hemisphere of diameter 14 cm is :
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 462 cm2.
T.S.A. of hemisphere = 3πr2
Diameter = 14 cm so,
radius = 14/2 = 7 cm
T.S.A = 3 × 22/7 × 7 × 7 = 462 cm2