Question

A river 3meter deep and 40meter wide is flowing at a rate of 2km per hour how much water will fall into the sea in a minute

Answer 1

ANSWER:-

Given:

A river 3m deep and 40m wide is flowing at a rate of 2km/hr.

To find:

The water will fall into the sea in a minute.

Explanation:

We have,

• River is deep 3m
• River is wide 40m

Water flowing in river in 1 hour= 2km

Water flowing in river in 1 hour= 2000m                [1km=1000m]

Water flowing in river in 60 minutes= 2000m       [1 hour=60 min.]

Water flowing in river in 1 minute= $\frac{2000}{60}$

Water flowing in river in 1 minutes= $\frac{100}{3}m$

Now,

• Length of the river, L= 100/3m
• Breadth of the river,B= 40m
• Height of the river, H= 3m

We know that formula of the volume of the cuboid:

⇒ Length× Breadth× height

∴ Volume of water falling in 1 minutes= $(\frac{100}{3} *40*3)m^{3}$

Volume of water falling in 1 minutes= (100× 40×1)m³

Volume of water falling in 1 minutes= 4000m³

Thus,

We know that 1m³ = 1000 litres

Volume of water falling in 1 minutes= (4000× 1000)litres

Volume of water falling in 1 minutes= 4000 kilo litres.

Answer 2

hope it's help u........