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प्रश्न
Find the volume of a sphere of diameter 6 cm.
उत्तर
Radius of the sphere, r = \[\frac{6}{2}\] = 3 cm
∴ Volume of the sphere, V = \[\frac{4}{3}\pi r^3 = \frac{4}{3} \times 3 . 14 \times \left( 3 \right)^3\] = 113.04 cm3
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Solution :
The surface area of the sphere = 4πr2
= `4 xx 22/7 xx square^2`
= `4 xx 22/7 xx square`
= `square xx 7`
∴ The surface area of the sphere = `square` sq.cm.
