Block-shaped 7976
A block-shaped pool with a volume of 200m3 is to be built in the recreation area. Its length should be 4 times the width, while the price of 1 m2 of the pool bottom is 2 times cheaper than 1 m2 of the pool wall. What dimensions must the pool have to make the construction the cheapest?
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- quadratic equation
- expression of a variable from the formula
- arithmetic
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