V=4/3πr^3 with 5 inches radius
Write "5" in place of 'r' in the volume formula: V = 4/3 π (5)³ V = (4/3 π) (125)Then just crank through the numbers, using a pencil or a calculator.' 3.14 ' is usually a sufficiently precise value to use for π .
you know π=22/7=3.14v=⁴/3 •π•r³v=⁴/3•3.14•5³v=4/3•392.5v=1570/3v=523.33
