Question

Mary wants to fill a cylindrical cup with water. The dimensions of the cup are labeled below.

Answer 1

$\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=6\\ h=15 \end{cases}\implies \begin{array}{llll} V=\pi (6)^2(15)\implies V=540\pi \\\\\\ V\approx 1696.46 \end{array}$

notice, the cup can take that much in cm³, so it can surely take 1620 just fine.

Answer 2

The answer is 1696.46 (rounded) because you have to use the equation of the volume of a cylinder