Question

Find the total surface area of a hemisphere of radius 10 cm. (Use π = 3.14)

Answer 1

Hello!

• Radius, $\bf{r = 10\:cm}$

Then,

$\underline{\bf{T.S.A. \:of\: Hemisphere}}$ :

$\sf 3πr^{2} \\ \\ \implies 3 \times 3.14 \times (10)^{2} \\ \\ \implies 3 \times 3.14 \times 100 \\ \\ \implies 3 \times 314 \implies \boxed{\red{\bf{942\:cm^{2}}}}$

Cheers!

Answer 2

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[Sujeet ]

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NoTE:- Area of hemisphere-

[3πr²]

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ACCORDING TO THE;

3×3.14×(10)²

3×3.14×100

9.42×100

942

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Answer:- 942cm²