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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 2 m and volume is 8 m3. 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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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 8m3. 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?

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 8m3. 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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MODERN PUBLICATION-APPLICATIONS OF DERIVATIVES-EXERCISE 1 (f) (Long Answer Type Questions (II))
  1. Show that a cylinder of a given volume which is open at the top has...

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  2. The height of a closed cylinder of given volume and the minimum sur...

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  3. Rectangles are inscribed inside a semicircle of radius r. Find the r...

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  4. A square-based tank of capacity 250 cu m has to bedug out. The cost of...

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  5. A tank with rectangular base and rectangular sides, open at the top...

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  6. A rectangular sheet of tin 45 cm by 24 cm is to be made into a box ...

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  7. An open box is to be made of square sheet of tin with side 20 cm, by c...

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  8. A canon is fired at an angle theta(0le theta le(pi)/(2)) with the hori...

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  9. Find the maximum profit that a company can make, if the profit functi...

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  10. Find the maximum profit that a company can make, if the profit functio...

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  11. Find the maximum profit that a company can make, if the profit functio...

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  12. Find the point on the curve y^2 = 4x which is nearest to the point (2;...

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  13. Find the point on the curve y^2= 2x which is at a minimum distance fro...

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  14. Find the point on the curve y^(2)=2x, which is nearest to the point (1...

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  15. Find the point on the parabola x^(2)=8y, which is nearest to the point...

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  16. A helicopter is flying along the curve y=x^(2)+2. A soldier is placed ...

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  17. A manufacturer can sell 'x' items at a price of Rs (250-x) each. The c...

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  18. A factory can shell 'x' items per week at price of Rs (20-(x)/(1000)) ...

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  19. Let 'p' be the price per unit of a certain product, when there is a sa...

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  20. If performance of the students 'y' depends on the number of hours 'x' ...

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