2022 · Q65
A cylindrical pipe has inner diameter of 14 cm. Water flows through it at a rate of 154 litres per minute. What is the speed of water in km/hr?(Take π =(22)/(7))
Elementary MathematicsMensuration
- A0.5
- B0.6
- C0.8
- D1
Explanation
Pipe area = πx7² = 154 cm²; speed = 154000/154 = 1000 cm/min = 0.6 km/hr. Hence the keyed option is B.