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A bus stop is barricaded from the remain...

A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs 12 per `m^2`, what will be the cost of painting all these cones (use `pi = 3.14`, and take `sqrt(1.04)=1.02`) ?

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MODERN PUBLICATION-SURFACE AREAS AND VOLUMES-EXERCISE
  1. A bus stop is barricaded from the remaining part of the road, by using...

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  2. Find the lateral surface and total surface area of a cuboid of length ...

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  3. Find the total lateral surface area of a cube of edge is 10 cm.

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  4. The latera surface area of a cube is 1014 sq.cm, find the main diagon...

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  5. The lateral surface area of a cube is 64 m^2 find its total surface ar...

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  6. Find the ratio of the total surface area and lateral surface area of a...

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  7. The dimensions of a room are 5mxx4mxx3m. Find the cost of white washin...

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  8. Find the length of the longest rod that can be placed in a room 12 m l...

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  9. Can we construct a cube whose length of main diagonal is 13sqrt3cm and...

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  10. Three equal cubes are placed adjacently in a row. Find the ratio of to...

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  11. The momentum of a body is increased by 50% what is the percentage incr...

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

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  13. The length and breadth of a room are in the ratio 4:3 and its height i...

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  14. A class room is 7 m long, 6.5 m wide and 4 m high. It has one door 3 m...

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  15. If V is the volume of a cuboid of dimensions a,b,c and S is its surfac...

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  16. The areas of three adjacent faces of a cuboid are x,y and z. if the vo...

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  17. Find the volume of the cuboid whose dimensions are length=26m, breadth...

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  18. Find the volume of the cuboid whose dimensions are length=24 m, breadt...

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  19. If the areas of three adjacent faces of a cuboid are 8cm^2,18cm^2 and ...

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  20. The breadth of a room is twice its height and is half of its length. T...

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  21. Two cubes, each of volume 512cm^3 are joined end to end. Find the surf...

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