Question

The radius of hemisphere is 21m. Find the total surface area of hemisphere.

Answer 1

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Here is your answer

Given: Radius of hemisphere = 21m

As we know the formula,

Total surface area of hemisphere
$= 3\pi {r}^{2}$

$= \frac{3 \times 22 \times 21 \times 21}{7} \\ \\ = 4158 {m}^{2}$

Therefore, Total surface area of hemisphere is 4158 m^2.

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Answer 2

Hi friends

Here is your answer

Radius = 21 m

Total Surface Area = 3πr^2
$= \frac{3 \times 22 \times 21 \times 21}{7} \\ = 66 \times 21 \times 3 \\ = 66 \times 63 \\ = 4158 \: m {}^{2}$
Hope it helps you

@MSD