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Mary wants to decorate her Christmas tre...

Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden box covered with coloured paper with picture of Santa Claus on it (see the given figure). She must know the exact quantity of paper to buy for this purpose. If the box has length, breadth and height as 80 cm, 40 cm and 20 cm respectively, how many square sheets of paper of side 40 cm would she require ?

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The correct Answer is:
7 sheets
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KUMAR PRAKASHAN-SURFACE AREAS AND VOLUMES-MULTIPLE CHOICE QUESTIONS
  1. Mary wants to decorate her Christmas tree. She wants to place the tree...

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  2. The total surface area of a cuboid with length 20 cm, breadth 15 cm an...

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  3. The lateral surface area of a cuboid with length 15 cm, breadth 8 cm a...

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  4. The diameter of a cylinder is 7 cm and its curved surface area is 220 ...

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  5. The total surface area of a closed cylinder with radius 3.5 cm and hei...

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  6. The curved surface area of a cone is 880 cm^(2). If its slant height i...

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  7. The curved surface area of a cone with diameter 14 cm and slant height...

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  8. The height of a cone is 24 cm and its slant height is 25 cm. Then, its...

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  9. The circumference of the base of a cone is 44 cm and its slant height ...

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  10. The diameter of a cone is 7 cm and its slant height is 16.5 cm. Then, ...

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  11. Total surface area of a hemisphere with radius 7 cm is ……… cm^(2).

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  12. Total surface area of a hemisphere is 72 cm^(2). Then, its curved surf...

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  13. The surface area of a sphere is 616 cm^(2). Then, its radius is ……… cm...

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  14. In a cuboid, the area of the face with sides length and breadth is 120...

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  15. The volume of a cylinder is 2200 cm^(3) and its height is 7 cm. Then, ...

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  16. The radius and height of a cone are 7 cm and 3 cm respectively. Then, ...

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  17. The volume of a sphere is 4.5 picm^(3). Then, its diameter is ……… cm.

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  18. The ratio of radii of two cones is 2 : 3 and the ratio of their height...

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  19. The circumference of the base of a cone is 44 cm and its height is 6 c...

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