Question

if a solid sphere of radius 10 cm is melted into 8 spherical solid balls of equal radius, then the surface area of each ball will be (in sq.cm)

Answer 1

4/3 π x 10 x 10 x 10 = 8 x 4/3 π x r x r x r
r = 5
4π x 5 x 5 = 100π