Question

Fill in the blanks : The total surface area of a solid hemisphere of diameter 3 cm is

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Answer 1

$diameter = 3 \: cm \\ radius = \frac{3}{2} \\ radius = 1.5 \: cm$

$TSA\: of \: hemisphere = 3\pi {r}^{2}$

$TSA = 3 \times 3.14 \times (1. {5)}^{2} \\ TSA = 9.42 \times 2.25 \\ TSA = 21.195 \: {cm}^{2}$