Question

the radius of sphere is 7cm find its volum

Answer 1

The formula for the volume of a sphere is given by
V = (4/3)πr3
Since the radius is 7 cm, let's substitute that in:
V = (4/3)(3.14)(7 cm)3
V = 1436.755 cm3 = 1437 cm3, rounding to the nearest whole unit as requested.