Question

Water is flowing at the rate of 6km/h through a pipe of diameter 14 cm into a rectangular tank which is 60m long and 22m wide determine the time in which the level of the water in the tank will rise by 7cm

Answer 1

Answer:

Step-by-step explanation:

Convert all to metres:

5 km = 5000 m

14 cm = 0.14 m

7 cm = 0.07 m

Find the radius:

Radius = Diameter ÷ 2

Radius = 0.14 ÷ 2 = 0.07 m

Find the amount of water that flowed out in an hour:

Volume = πr²h

Volume = π (0.07)² (5000) = 77 m³ per hour

Find the amount of water needed in the tank:

Volume = Length x Breadth x Height

Volume = 50 x 44 x 0.07 = 154 m³

Find the number of hours needed:

Number of hours = 154 ÷ 77 = 2 hours

Answer: It takes 2 hours to fill up the tank to rise by 7 cm

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Answer 2

Answer:

Answer is 1 hour

Step-by-step explanation: