What is the volume of a right cone having a base diameter of 10 cm and a height of 9 cm?
A) 628 cm cubed
B) 471 cm cubed
C) 157 cm cubed
D) 236 cm cubed
volume = (1/3)(area of base)(height)
area of base = pi * radius2 = pi * (10/2)2 = pi * 52 = 25pi cm2
volume = (1/3)( 25pi )( 9 ) cm3
volume = 75pi cm3
volume ≈ 236 cm3
+252 
