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Top surface of a raised platform is in t...

Top surface of a raised platform is in the shape of a regular octagon as shown in the figure. Find the area of the octagonal surface.

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MBD-MENSURATION-EXERCISE
  1. Top surface of a raised platform is in the shape of a regular octagon...

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  2. Find the area of a parallelogram whose base is 20 cm and the correspo...

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  3. Find the base of parallelogram whose are is 400 cm^2 and whose height...

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  4. Find the height of a triangle whose base is 60 cm and whose are is 600...

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  5. Find the area of an equilateral triangle of sides8 dm each.

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  6. Find the base of a parallelogram,whicvh has an area of 840 cm^2 and no...

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  7. A garden is 30 m long and 25 m broad.A path 5 m wide is to be built ou...

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  8. A verandah 1 m wide is constructed all along the outside of a room 5 m...

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  9. A verandah 1 m wide is constructed all along the outside of a room 5 m...

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  10. The diagonals of a rhombus are 15 cm and 20 cm.What is its area?

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  11. A diagonal of a quadrilateral is 28.4 m long.The perpendiculars to the...

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  12. The area of a trapezium is 35 cm^2 and one base and altitude ae 5 cm a...

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  13. Nazma owns a plot near a main road. Unlike some other rectgangular plt...

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  14. Find the area of quadrilateral PQRS shown in Fig 11.11.

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  15. Find the area of a rhombus whose diagonals are of lengths 10 cm and 8....

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  16. The area of a trapezium shaped field is 480 m^2 , the distance between...

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  17. The area of a rhombus is 240 cm^2 and one of the diagonals is 16 cm. ...

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  18. There is a hexagon MNOPQR of side 5 cm (Fig 11.20). Aman and Ridhima d...

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  19. Find the surface are of the cuboid whose dimensions are 40 cm xx 25 cm...

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  20. A cuboidal oil tin is 50 cm by 30 cm by 40 cm.Find the cost of the tin...

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  21. Find the ost of painting 12 pillars each of dimeter 48 cm and height 7...

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