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

How many cubic metres of earth must be dug to sink a wll which is 16 m deep and which has a radius of 3.5 m? If the earth taken out is spread over a rectangular plot of dimensions `25mxx16m`, what is the height of the platform so formed?

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The correct Answer is:
1.54 m
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RS AGGARWAL-VOLUME AND SURFACE AREA OF SOLIDS-TEST PAPER -20
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  2. Find the volume of a cube whose total surface area is 384 cm^(2).

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  3. How many soap cakes each measuring 7 cm xx 5 cm xx 2.5 cm can be place...

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  4. The radius and height of a cylinder are in the ratio 5:7 and its volum...

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  5. Find the number of coins, 1.5 cm in diameter and 0.2 cm thick, to b...

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  6. Find the surface ara of a chalk box, whose length, breadth and height ...

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

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  8. The circumference of the circular base of a cylinder is 44 cm and its ...

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  9. The area of the base of a circular cylinder is 35cm^(2) and its heigh ...

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  10. A cuboid having dimensions 16mxx11mxx8m is melted to form a cylinder o...

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  11. The dimensions of a cuboid are 8mxx6mxx4m.Its lateral surface area is

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  12. The length breadth and height of a cuboid are in the ratio 3:4:6 and i...

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  13. If l,b,h be the length, breadth and height of a cuboid, then its whole...

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  14. If l,b,h be the length, breadth and height of a cuhoid, then its later...

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  15. If each side of a cube is a, then its lateral surface area is ………. Sq....

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  16. If r is the radius of the base and h be the height of a cylinder, then...

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  17. If r is the radius of the base and h be the height of a cylinder, then...

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