**Helpful Links**

**Mark Scheme**

**Working**

Here is an inflated swimming ring with dimensions in centimetres.

The volume of the ring, *V* cm^{3} , is given by

Work out the volume when

Give your answer to 3 significant figures.

*a*= 20 and*b*= 30Give your answer to 3 significant figures.

**Question**

20) Here is an inflated swimming ring with dimensions in centimetres.

The volume of the ring, *V* cm^{3} , is given by

Work out the volume when

Give your answer to 3 significant figures.

*a*= 20 and*b*= 30Give your answer to 3 significant figures.

**[3 marks]**