A tank with rectangular base and rectangular sides, open at the top is to be constructed so that its depth is 2 m and volume is 8 m 3 If building of tank costs 70 per square metre for the base and 45 per square metre for the sides, what is the cost of least expensive tank

Question: A tank with rectangular base and rectangular sides, open at the top is to be constructed so that its depth is 2 m and volume

A tank with rectangular base and rectangular sides, open at the top is to be constructed so that its depth is 2 m and volume is 8 m³. If building of tank costs ? 70 per square metre for the base and ? 45 per square metre for the sides, what is the cost of least expensive tank?

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