Question

If a cylinder holds a volume of 100 cm3, and is 30 cm tall, which is the area of the bottom of the cylinder? 3.33 cm2 300 cm2 70 cm2

Answer 1

v = pi*r^2*h

a = pi*r^2

therefore,

v = a*h

100 = a*30

a = 100/30 = 3.33 cm2