In one fortnight of a given month , there was a rainfall of 10 cm in a river valley. If the area of the valley is 7280 km ² .show that the total rainfall was approximately equivalent to the addition to the normal water of three Rivers each 1072km long, 75m wide and 3m deep.
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Mention the units of the length of each river.
If the length of the river is 1072 m = 107200 cm
Breadth is 75 m = 7500 cm
Depth = 3 m = 300 cm
Volume of 3 rivers = 3 x 107200 x 7500 x 300 = 7236 x 10^8
Area of the valley = 7280 km²
= 7280 x 10^10
Volume of the water from the rainfall = 7280 x 10^10 x 10 = 728 x 10^12
From next gurukul website
If the length of the river is 1072 m = 107200 cm
Breadth is 75 m = 7500 cm
Depth = 3 m = 300 cm
Volume of 3 rivers = 3 x 107200 x 7500 x 300 = 7236 x 10^8
Area of the valley = 7280 km²
= 7280 x 10^10
Volume of the water from the rainfall = 7280 x 10^10 x 10 = 728 x 10^12
From next gurukul website
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