Least Expensive!

Calculus Level 3

A tank with rectangular base and rectangular sides, open at the top is to be constructed so that its depth is \(2\text{ m}\) and volume is \(8 \text{ m}^3.\) If the building of the tank costs \(\$ 70\) per square meter for the base and \(\$45\) per square meter for the sides.

What is the cost of the least expensive tank?

  • Submit your answer in \(\$.\)
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