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The cost of papering the four walls of a room at 75 paise per square metre is Rs 240. The height of the room is 5 metres. Find the length and the breadth of the room, if they are in the ratio `5: 3`.

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20 m and 12 m
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NAGEEN PRAKASHAN ENGLISH-SURFACE AREA AND VOLUME-Exercise 13a
  1. Find the volume and total surface area of a cube whose each edge is 2 ...

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  2. The outer dimensions of a closed wooden box are 22 cm, 15 cm and 10 cm...

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  3. The cost of papering the four walls of a room at 75 paise per square m...

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  4. A closed rectangular box has length = 40 cm, breadth = 30 cm and heigh...

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  5. The length, breadth and height of a room are 7.5 m, 4.5 m and 3.0 m re...

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  6. The cost of papering the walls of a room 12 m long at the rate of Rs....

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  7. Find the volume of wood required for a closed wooden box with external...

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  8. Three cubes whose edges are 6 cm, 8 cm and x cm, respectively are mel...

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  9. Three cubes of metal whose edges are in the ratio 3:4:5 are melted ...

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  10. How many cubes of edge 3 cm can be formed from a wooden piece of dimen...

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  11. Find the number of bricks required to construct a wall of dimensions 3...

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  12. The external dimension of an open box are 40 cm xx 30 cm xx 35 cm. All...

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  13. The sum of the length, breadth and height of a cuboid is 38 cm and the...

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  14. A wall 24 m long, 5 m high and 0-25 m thick is to be constructed using...

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  15. 50 student sit in a classroom. Each student requires 9 m^(2) area on f...

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  16. A rectangular cardboard sheet has length 32 cm and breadth 26 cm. The ...

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  17. In a shower, 5 cm of rain falls. Find the volume of water that falls o...

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  18. A feild is 70 m long and 40 m broad. In one corner of the field, a pit...

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  19. If V is the volume of a cuboid of dimensions a , b , ca n dS is its...

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  20. The areas of three adjacent faces of a cuboid are x, y and z. If the v...

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