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How many cubic metres of earth must be d...

How many cubic metres of earth must be dug to construct a well 7 m deep and of diameter 2.8 m?

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NCERT EXEMPLAR-MENSURATION-EXERCISES
  1. A cube of side 5 cm is cut into as many 1 cm cubes as possible. What i...

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  2. A square sheet of paper is converted into a cylinder by rolling it alo...

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  3. How many cubic metres of earth must be dug to construct a well 7 m dee...

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  4. The radius and height of a cylinder are in the ratio 3:2 and its volum...

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  5. The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long ...

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  6. Radius of a cylinder is r and the height is h. Find the change in the ...

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  7. Radius of a cylinder is r and the height is h. Find the change in the ...

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  8. Radius of a cylinder is r and the height is h. Find the change in the ...

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  9. If the length of each edge of a cube is tripled, what will be the chan...

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  10. A carpenter makes a box which has a volume of 13,400 cm^3. The base ha...

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  11. A cuboidal tin box opened at the top has dimensions 20 cm xx 16 cm xx ...

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  12. Find the capacity of water tank, in litres, whose dimensions are 4.2 m...

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  13. How many cubes each of side 0.5 m are required to build a cube of volu...

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  14. A wooden box (including the lid) has external dimensions 40 cm by 34 ...

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  15. A river 2 m deep and 45 m wide is flowing at the rate of 3 km per hour...

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  16. Find the area to be painted in the following block with a cylindrical ...

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  17. A truck carrying 7.8 m3 concrete arrives at a job site. A platform of ...

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  18. A hollow garden roller of 42 cm diameter and length 152 cm is made of ...

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  19. Three cubes each of side 10 cm are joined end to end. Find the surface...

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  20. Below are the drawings of cross sections of two different pipes used t...

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