Question

find the volume of sphere whose surface area is 154 cm square

Answer 1

Hope it will help u....

Answer 2

surface area of sphere = 4\pi r^{2} = 154 square cm
so, radius of sphere = 154/4*7/22 = 3.5cm
now
volume= surface area*radius/3
            =154*35/30
            =154*7/6
            =77*7/3
            =539/3
            =179.7  cm cube

hope it would be helpful to u