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Surface Areas and Volumes | Surface Areas and Volumes - Exercise 13.4

Question 10

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will

fall into the sea in a minute?

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Given:

Depth of river, h = 3 m

Width of river, b = 40 m

Rate of water flow = 2 km per hour = 2000 m / 60 min = 100/3 m/min

Now, Volume of water flowed in 1 min = (100/3 x 40 x 3) = 4000 \mathrm{m}^{3}

Therefore, 4000 \mathrm{m}^{3} water will fall into the sea in a minute.

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Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 10

A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water will

fall into the sea in a minute?

Looking to do well in your science exam ? Learn from an expert tutor. Book a free class!

Given:

Depth of river, h = 3 m

Width of river, b = 40 m

Rate of water flow = 2 km per hour = 2000 m / 60 min = 100/3 m/min

Now, Volume of water flowed in 1 min = (100/3 x 40 x 3) = 4000 \mathrm{m}^{3}

Therefore, 4000 \mathrm{m}^{3} water will fall into the sea in a minute.

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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