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The diameter of a cylindrical well is 4.5 m and depth of the well is 14m. Find the cost of cementing its inner curved surface at the rate of Rs 12.50 per sq. metre.

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MODERN PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE
  1. Forty cylindrical pillars of the building are to be cleaned. If the di...

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  2. Find the cost of sinking tube well 280 m deep having diameter 3 m at t...

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  3. The diameter of a cylindrical well is 4.5 m and depth of the well is 1...

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  4. Find the volume of a right circular cylinder of height 21 cm and base ...

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  5. The diameter of a cylinder is 28 cm and its height is 40 cm. find the ...

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  6. The area of the curved surface of a cylinder is 4400 sq.cm and the cir...

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  7. The sum of the radius of the base and the height of a solid cylinder i...

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  8. The ratio between curved surface area and total surface area of right ...

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  9. The radii of two cylinders are in the ratio 2:3 and their heights are ...

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  10. The ratio between the radius of the base and the height of cylindrical...

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  11. The curved surface area of a cylindrical pillar is 264 m^2 and its v...

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  12. Find the weight of a lead pipe 3.5 m long. The external diameter of pi...

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  13. How many cubic metres of earth must be dug out to sink a well 14 m dee...

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  14. A powder tin has a square base with side 12 cm and height 17.5 cm. ano...

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  15. A copper rod of diameter 1 cm and length 8 cm is drawn into a wire of ...

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  16. The trunk of a tree is cylindrical and its circumference is 176 cm. If...

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  17. Water flows out through a circular pipe whose internal diameter is 2 c...

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  18. From a top of inner radius 0.75 cm, water flows at the rate of 7 m per...

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  19. A well of diameter 2 m is dug 14 m deep. The earth taken out of it is ...

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  20. A rectangular sheet of paper 30cmx×18cm can be transformed into the cu...

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