Question

A mound of beans in roughly in the shape of a cone of height 20cm and base diameter 60cm

Answer 1

$volume = \frac{1}{3} \pi \: {r}^{2} \: h \\ \\ = \frac{1}{3} \times \frac{22}{7} \times {30}^{2} \times 20 \\ \\ = \frac{1}{3} \times \frac{22}{7} \times 900 \times 20 \\ \\ = 18857.14 \: {cm}^{3}$