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A hemisphere of inner diameter 14cm. Then its Total surface area is

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$662 {cm}^{2}$

$462 {cm}^{2}$

$450 {cm}^{2}$

$456 {cm}^{2}$

answer is A.

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Detailed Solution

$d = 14 cm, r = \frac{14}{2} = 7 cm$

$TSA of hemisphere = 3 π r^{2}$

$TSA = 3 \times \frac{22}{7} \times 7 \times 7 = 21 \times 22 = 462 {cm}^{2}$

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