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The number of planks of dimensions (4mxx...

The number of planks of dimensions `(4mxx50mxx20cm)` that can be stored a pit which is 16 m long, 12 m wide and 40 m deep is

A

1900

B

1920

C

1800

D

1840

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MODERN PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE
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  2. The lateral surface area of a cube is 256cm^2. The volume of the cube ...

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  4. The length of the longest pole that can be put in a room of dimensions...

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  7. A cone and a hemispher have equal bases and equal volumes. Find the ra...

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  8. Three solid sphres of radius 1 cm, 6 cm and 8 cm, respectively are mel...

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  9. The ratio of the volumes of a right circular cylinder and a right circ...

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  10. If the ratio of the volumes of two spheres is 1:8, then the ratio of t...

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  11. If a solid sphere of radius r is melted and cast into the shape of a s...

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  12. A cone of semi vertical angle of alpha is inscribed in a sphere of rad...

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  13. How many cubical blocks wose edge measures 3 cm can be formed by melti...

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  14. How much length of the iron sheet 11 cm, wide is required for making a...

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  15. The slant side of a right circular cone is 10 m and its height 8 m. fi...

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  16. Find the lateral surface area of a cube of side is 8 cm.

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  17. The total surface area of a cylinder is 462cm^2 and its curved surface...

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  18. If the radius of a sphere is increased by 10%, prove that its volume w...

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  19. The surface area of a sphere of radius 5 cm is five times the area of ...

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  20. A well with 10 m inside diameter is dug 14 m deep. Earth taken out of ...

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