A water pipe has a circular cross‑section of radius 0.1 m and carries water at a speed of 3 m/s. Calculate the volume of water that flows through the pipe in one minute. Provide the answer in litres. (Use π = 3.14).

Step-by-step solution

1. Step 1: Calculate the cross‑sectional area: $A=\pi r^2=3.14\times 0.1^2=0.0314$ m².
2. Step 2: Find the flow rate per second: $Q=A\times v=0.0314\times 3=0.0942$ m³/s.
3. Step 3: Convert the flow rate to per minute: $0.0942\times 60=5.652$ m³/min.
4. Step 4: Convert cubic metres to litres: $5.652\times 1000=5652$ litres.

Concept tested: Fluid flow rate in pipes

Published 13 October 2026 · How this solution was prepared and checked