Question

In one fortnight of a given when there was a rainfall of 10 cm in a river valley

Answer 1

Please note that there is an error in the question. The area of the valley will be 7280 km2  and not 92780 km2 and also the breadth of the river will be 75m instead of 75 km

 

So, then using simple volume formulas for cuboid, where volume = l*b*h or area*h

The volume of rainfall in the area = 7280 *10 *0.00001 km3 = 0.728 km3

Volume of water in 3 rivers = 3* 1072*75*0.001* 3*0.001 km3 = 0.723 km3

Answer 2

Answer:

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