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A well of diameter 2 m is dug 14 m deep....

A well of diameter 2 m is dug 14 m deep. The earth taken out of it is spread evenly all around it to a width of 5 m do form an embankment. Find the height of the embankment.

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A well with 10 m inside diameter is dug 14 m deep. Earth taken out of its is spread all around to a width of 5 m to form an embankment. Find the height of the embankment.

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A body of mass 6 kg is kept at a height of 5 m from the surface of earth. Find the potential energy of the body.

A plot of land is 240 m long and 180 m broad. A trench 10 m wide is dug all around if and the earth dug out is spread over the plot, consisting level of the plot by 25 cm. find the depth of the brench.

A field is in the form of a rectangle of length 18 m and width 15 m. A pit, 7.5 m long, 6 m broad and 0.8 m deep, is dug in a corner of the field and the earth taken out is spread over the remaining area of the field. Find out the extent to which the level of the field has been raised.

MODERN PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE
  1. Water flows out through a circular pipe whose internal diameter is 2 c...

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

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

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

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  5. The barrel of a fountain-pen, cylindrical in shape, is 7 cm long and 5...

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  6. Water is flowing at the rate of 3km/h through a circular pipe of 20 cm...

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  7. A cylindrical water tank of diameter 1.4 m and height 2.1 m is being f...

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  8. Find the curved area of a cone, if its slant height is 60 cm and the r...

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  9. The radius of a cone is 7 cm and area of curved surface is 176cm^2. Fi...

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  10. The radius of a cone is 5 cm and vertical height is 12 cm. find the ar...

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  11. find the total surface area of a right circular cone with radius 6 cm ...

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  12. The height of a cone is 21 cm. find the area of the base if the slant ...

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  13. The radius of the slant height of a cone are in the ratio of 4:7. if i...

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  14. The area of the curved surface of a cone is 60 picm^2. If the slant he...

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  15. The diameter of two cones are equal. If their slant height s are in th...

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  16. There are two cones, the curved surface area of one is twice that of t...

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  17. A tent of heihgt 33 m is in the form of a right circular cylinder of d...

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  18. A cylinder and a cone have equal radii of their bases and equal height...

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  19. The curved surface area of a cone exceeds the base area by 88cm^2 it s...

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  20. A tent is in the form of a right circular cylinder, surmounted by a co...

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