Question

A basketball has a circumference of 31.4 using 3.14 as an approximation for pie what is the basketball's volume to the nearest cubic inch

Answer 1

C=2pir
V=(4/3)pir^3
solve for V

C=31.4
31.4=2pir
divide by 2
15.7=pir
divide both sides by pi or 3.14
5=r

V=(4/3)pir^3
V=(4/3)pi5^3
V=(4/3)pi125
V=(500/3)*3.14
V=523.33333333333333333333333333333
rounded
523 cubic inchs