A tank with rectangular base and rectangular sides, open at the top is to be constructed so that...

Question From - NCERT Maths Class 12 Chapter 6 MISCELLANEOUS EXERCISE Question – 9 APPLICATION OF DERIVATIVES CBSE, RBSE, UP, MP, BIHAR BOARD

QUESTION TEXT:-
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 Rs 70 per sq metres for the base and Rs 45 per square metre for sides. What is the

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