Question

The rainfall on a certain day was 4cm how many litres of water fell on a 2 hectare on that day

Answer 1

$2 \: hectare = 2 \times 10000 = 20000 {m}^{2} \\ total \: vol \: of \: water \: in \: field = area \: of \: field \times ht \: of \: water \\ = 20000 \times \frac{4}{100} \\ = 200 \times 4 \\ = 800 {m}^{3} \\ vol \: in \: liters = 800 \times 1000 \\ = 800000liters$