Question

Find the volume and the surface area of the spheres in the following :

Radius = 7 cm 

Answer 1

Radius = 7 cm 

Volume of sphere = `4/3pir^3`

= `4/3 xx 22/7 xx 7 xx 7 xx 7`

= 1437.33 cm³ 

Surface area = `4pir^2`

= `4 xx 22/7 xx 7 xx 7`

= 616 cm²

Volume = 1437.33 cm³  and Surface area = 616 cm²