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

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