The radius of a sphere is 9cm . Calculate it's volume and surface area

The given values
radius r = 9 cm

Step by step calculation
formula to find surface area = 4 ? r2
substitute the values
= 4 x ? x 92
=?1018.28 cm2

formula to find volume = (4/3) ? r3
substitute the values
= (4/3) x ? x 93
=?3054.85 cm3