Question

a well 2 m and radius and 14 m deep is to be dug find the cost of digging the well at rupees 1.20 per m​

Answer 1

Ans = ₹211.2

$Volume \: of \: well \: cylinder = \pi \times {r }^{2} \times h \\ = \frac{22}{7} \times 2 \times 2 \times 14 \\ = 176 {m}^{3}$

$Cost \: of \: digging = 176 {m}^{3} \: \times ₹1.20 \\ = ₹211.2$