Question

A ball has a radius of 56mm


a)Calculate the surface area



b)what is the volume of the sphere


could somebody please answer for my math homework I need help

Answer 1

Surface area= 4pir^2
= 4(pi)(56^2)
= 39408mm^2
Volume = (4/3)pir^3
= (4/3)pi(56^3)
= 735618.58mm^3