Question 553729: Water is poured into the container until the water level is 4cm from the top.If the container is 40cm long and has uniform cross-section,calculate to the nearest liter,the volume of water in the container.
Answer by KMST(5328)   (Show Source):
You can put this solution on YOUR website! Not enough information.
We can calculate the volume of a solid in which the cross-section parallel to its base is constant by multiplying the surface area of the base times the height (measured perpendicular to that base).
The only measurement you have about the container is that it is 40 cm long. Is that the height? If so what about the base? With just that one measurement, there are too many possibilities for the size (and shape) of the container. I imagine a large lasagna pan, 40 cm long, 26 cm wide, and 7 cm deep. I imagine a small fish tank, 28 cm tall, with a 40 cm by 25 cm rectangular base. I imagine a medium size fish tank, 40 cm tall with a 60 cm by 35 cm base. I imagine a 40 cm length of thin copper pipe, closed off at one end. I imagine a cylindrical trash can, 40 cm tall.
The fact that the water level is 4 cm from the top only tells us to subtract 4 cm from one of the containers dimensions.
If we fill, up to 4 cm from the top, the small fish tank, 28 cm tall, with a 40 cm by 25 cm rectangular base, we have a volume of water (in cubic centimeters) of
A cubic centimeter is a milliliter, so 1 liter is 1000 cubic cm, and the volume of the fish tank I defined above is 24 liters.
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