Question

If the length of radius of a sphere is 10.5cm, let us write by calculating the whole surface area of the sphere.




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Answer 1

★Given:-

The radius of a sphere is 10.5cm.

★ To Find:-

The Whole surface area of the sphere.

$\orange{\bold{\underline{\underline{Step-by-step-explanation:-}}}}$

The length of the radius of the sphere =10.5cm.

∴ The whole surface area of the sphere = $\large{4πr^2}$

$\bf\implies \: 4 \times \frac{22}{7} \times \frac{105}{10} \times \frac{105}{10}$

$\implies$1386 sq.cm.

∴The Whole surface area of the sphere = 1386 sq. cm

$\star\;\large\bold{\underline{\underline{\sf{\purple{Thank uhh}}}}}$

Answer 2

$\star\;\large\bold{\underline{\underline{\sf{\red{Given:-}}}}}$

The radius of a sphere is 10.5cm.

$\star\;\large\bold{\underline{\underline{\sf{\red{To Find:-}}}}}$

The Whole surface area of the sphere.

$\green{\bold{\underline{\underline{Step-by-step-explanation:-}}}}$

The length of the radius of the sphere =10.5cm.

∴ The whole surface area of the sphere = $\large{4πr^2}$

$\implies \: 4 \times \frac{22}{7} \times \frac{105}{10} \times \frac{105}{10}$

$\implies$1386 sq.cm.

∴The Whole surface area of the sphere = 1386 sq. cm

$\star\;\large\bold{\underline{\underline{\sf{\pink{Thank uhh}}}}}$