Jenny fills some empty flowerpots completely with compost.

Question

Jenny fills some empty flowerpots completely with compost. Each flowerpot is in the shape of a cylinder of height 15 cm and radius 6 cm. She has a 15 litre bag of compost. She fills up each flowerpot completely. How many flowerpots can she fill?

Answer 1

A liter is a cubic decimeter. A liter is a cube in which all edges measure 1 decimeter.

One decimeter equals 10 centimeters.

The volume of a liter is 10*10*10=1000 cubic centimeters.

A 15 liter bag of compost is 15*1000=15,000 cubic centimeters.

The volume of each flowerpot is given by the formula V=(pi)(r²)(h)

V=(3.14159)(6²)(15)

V=(3.14159)(36)(15)

V=(3.14159)(540)

V=1696.458 cubic centimeters

You have 15,000 cubic centimeters of compost.

15,000/1696.458≈8.84 flowerpots

She can fill 8 flowerpots completely and 1 flowerpot about 0.8 full