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A tank with rectangular base and rectang...

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 `8m^(3)` . If building of tank costs Rs. 70 per square metre for the base and Rs. 45 per square metre for sides, what is the cost of least expensive tank ?

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The correct Answer is:
Therefore , the required cost of least expensive tank is Rs . 1000.
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