Question

surface area of sphere is 616 cm square find its radius

Answer 1

surface area of a sphere = 4 pie r2
4 pie r2 = 616
pie r2 = 616÷4
pie r2 = 154
r2 = 154 *7 /22
r2 = 7*7
r2 = 49
r = 7cm

Answer 2

Answer:given surface area of sphere is 616 cm^2

Step-by-step explanation:

Area of sphere = 616cm^2

4×pi×r^2=616cm^2

4×22/7×r^2=616

88/7×r^2=616

r^2=616×7/88

r^2=7×7

r^2=49

r=/49

r=7cm^2