(a)[3]
Calculate the circumference of the circle. Give your answer in terms of $\pi$.
(b)[2]
The base of a cylinder is a circle and the height is $h$ cm. Its volume is $540\pi\text{ cm}^3$. Work out $h$.
Mathematics 0580 · IGCSE · Surface area and volume
Surface area and volume — practice question
The area of a circle is given as $36\pi\text{ cm}^2$.