Question

Find the cost of digging a pit at the diameter of 2 m and depth of 14 m at the rate of rupeess 10 per m​

Answer 1

Answer:

Diameter of the well is 2.8m. therefore radius of the well = 2.8/2

= 1.4m

Height (depth) of the well is 21m

Volume of the well = πr²h

= 22/7 × 1.4 × 1.4 × 21

= 22 × 1.4 × 1.4 × 3

= 129.36m³

Total cost of digging the well at the rate of ₹1.75 per m³ = 129.36 × 1.75

= ₹226.38

Step-by-step explanation: