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Q.

A swimming pool is 200 m by 50 m and has an average depth of 2 m. By the end of a summer day, the water level drops by 2 cm. How many cubic meters of water is lost on that day?


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a

200m3

b

150m3

c

165m3

d

225m3 

answer is A.

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Detailed Solution

Given, L is length =200m,
B is breadth = 50m.
We know, Area of cuboid = length × breadth
Area of pool = 200m×50m
⇒1000 m 2  
Because 1m = 100cm so, level drop = 2cm
⇒ 2 100 m  
Water Lost = Level drop ×   Area of pool.
Water Lost =  2 100 ×10000 Water Lost = 200 m 3  
Therefore, the correct option is 1.
 
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A swimming pool is 200 m by 50 m and has an average depth of 2 m. By the end of a summer day, the water level drops by 2 cm. How many cubic meters of water is lost on that day?