Q

Find the surface area of a sphere of radius: (ii) 5.6 cm

Q : 1    Find the surface area of a sphere of radius:

(ii) $\small 5.6\hspace{1mm}cm$

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We know,

The surface area of a sphere of radius $r$ = $4\pi r^2$

$\therefore$ Required surface area = $4\times\frac{22}{7} \times(5.6)^2$

$\\ =88\times0.8\times5.6 \\ = 394.24\ cm^2$

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