Question

find the radius of a phere whose surface area is 154cm sq units

Answer 1

4 = 154
4 x 22/7 x = 154
88/7 = 154
  = 154 x 7/88
 = 7 x 7/4
 = 49/ 4
r = 
r = 7/2 =3.5 cm
plzz best

Answer 2

2πr(h+r) = 154
2*22/7r(h+r)