So wet.
Geometry
Level
2
The surface water in swimming pool forms a rectangle of length 40 m and breadth 15 m. the depth of water increases uniformly from 1.2 m at one end to 2.4 at other end. The volume of water in pool is 10k. What is k?
The answer is 108.
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You can see that because it rises uniformly its a trapezoid shape. So you using (a+b)h/2 You find the cross section to be (1.2+2.4)40/2=72. Then you can find the volume by multiplying it by 15 to get 72x15=1080 10k=1080 k=108