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प्रश्न
Find the volume and the surface area of the spheres in the following :
Diameter= 6.3 cm
उत्तर
Diameter= 6.3 cm
Diameter = 6.3 cm ⇒ radius (r) = 3.15 cm
Volume of sphere = `4/3pir^3`
= `4/3 xx 22/7 xx 3.15 xx 3.15 xx 3.15`
= 130.98 cm3
Surface area = `4pir^2`
= `4 xx 22/7 xx 3.15 xx 3.15`
= 124.74 cm2
Volume= 130.98 cm3 and Surface area = 124.74 cm2
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