Question

a well of diameter 2.1 metre is dug to a depth of 4 metre. find the volume of the earth removed is​

Answer 1

Answer:

a well of diameter 2.1 metre is dug to a depth of 4 metre find the volume of the earth removed is

Answer 2

Step-by-step explanation:

volume removed = volume of cylinder

$r = \frac{2.1}{2} m \\ h = 4m \\ volume \: = \pi {r}^{2} h \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{22}{7} \times \frac{2.1}{2} \times \frac{2.1}{2} \times 4 \\ \: \: \: \: \: \: \: \: \: \: = 13.86 {m}^{3}$