21 The cross-section of a container is a semi-circle with diameter 12cm.

The length of the container is 20cm.

The container is filled with water to a depth of 4cm

Calculate the number of litres of water in the container.

Give your answer correct to 2 significant figures.

21 The cross-section of a container is a semi-circle with diameter 12cm. The length of the container is 20cm. The container is filled with water to a depth of 4 class=