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A rectangular examination hall having se...

A rectangular examination hall having seats for 500 candidates has to be built so as to allow 4 cubic metres of air and 0.5 square metres of floor area per candidate. If the length of hall be 25 m, find the height and breadth of the hall.

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NCERT EXEMPLAR-MENSURATION-EXERCISES
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  2. The ratio of the radius and height of a cylinder is 2:3. If its volume...

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  3. External dimensions of a closed wooden box are in the ratio 5:4:3. If ...

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  4. The capacity of a closed cylindrical vessel of height 1m is 15.4 li...

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  5. What will happen to the volume of the cube, if its edge is (a) triple...

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  6. A rectangular sheet of dimensions 25 cm xx 7 cm is rotated about its l...

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  7. From a pipe of inner radius 0.75 cm, water flows at the rate of 7 m pe...

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  8. Four times the area of the curved surface of a cylinder is equal to 6 ...

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  9. A cylindrical tank has a radius of 154 cm. It is filled with water to ...

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  10. The length, breadth and height of a cuboidal reservoir is 7m, 6m an...

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  11. How many bricks of size 22 c m\ x\ 10 c m\ x\ 7c m are required to con...

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  12. A rectangular examination hall having seats for 500 candidates has to ...

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  13. The ratio between the curved surface area and the total surface area o...

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  14. A birthday cake has two tiers as shown in the figure below. Find the v...

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  15. Work out the surface area of following shapes

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  16. Work out the surface area of following shapes

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  17. Work out the surface area of following shapes

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  18. Work out the surface area of following shapes

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  19. Water flows from a tank with a rectangular base measuring 80 cm by 70 ...

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  20. A rectangular sheet of paper is rolled in two different ways to form t...

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