Partial Derivatives & the Gradient · Easy problem

The volume of a cylinder is $V = \pi r^2 h$. A cylinder has radius $r = 3$ cm and height $h = 5$ cm. Use differentials to estimate the change in volume, in cubic centimetres, when the radius increases by $0.1$ cm and the height increases by $0.2$ cm. Give your answer in terms of $\pi$.