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The area of a courtyard is 3750 m^3. Fin...

The area of a courtyard is 3750 `m^3`. Find the cost of covering it with gravel to a height of 1 cm if the gravel costs Rs. 6.40 per cubic metre.

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The correct Answer is:
Rs. 240
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RS AGGARWAL-VOLUME AND SURFACE AREA OF SOLIDS-EXERCISE 20 A
  1. The dimesions of a rectangular water tank are 2m 75 cm by 1 m 80 cm by...

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  2. A solid rectangular piece ofiron measures 1.05mxx70 cm xx1.5 cm. Find ...

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  3. The area of a courtyard is 3750 m^3. Find the cost of covering it with...

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  4. How many persons can be accommodated in a hall of length 16m, breadth ...

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  5. A carboard box is 1.2 m long, 72 cm wide and 54 cm high. How many bars...

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  6. The size of a match box is 4 cmxx2.5 cm xx1.5 cm. What is the volume o...

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  7. How many planks of size 2mxx25cmxx8cm can be prepared from a wooden bl...

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  8. How many bricks, each of size 25cmxx13.5cmxx6cm, will be required to b...

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  9. A wall 15 m long, 30 cm wide and 4m high is made of bricks, each measu...

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  10. Find the capacity of a rectangula cistern in litres whose dimensions a...

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  11. The volume of a block of gold is 0.5 m^3. If it is hammered into a she...

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  12. In a shower , 5 cm of rain falls . The volume of the water that falls ...

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  13. If a river of depthness 2 metres and breadth 45 metress, flowrs at a s...

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  14. A pit 5 m long and 3.5 m wide is dug to a certain depth. If the volume...

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  15. A rectangular water tank is 90 cm wide and 40 cm deep. If it can conta...

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  16. A beam, of wood is 5 m long and 36 cm thick. It is made of 1.35m^(3) o...

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  17. The volume of a room is 378m^(3) and the area of its floor is 84m^(2)....

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  18. A swimming pool is 260 m long and 140 m wide. If 54600 cubic metres of...

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  19. Find the volume of wood used to make a closed box of outer dimensionis...

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  20. Find the volume of iron required to make an open box whose external di...

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