If the radius of a sphere is increased by 3 cm, then its surface area increases by 156 π cm2 . The radius of the sphere before the increase was:  

1
7 cm
2
8 cm
3
6 cm 
4
5 cm

Sponsored

hivanix.in

Visit

This quiz is brought to you by hivanix.in

🌐 Web App Development

Quick Navigation