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The perimeter of an equilateral triangle...

The perimeter of an equilateral triangle is 60 cm then its area is …………… `cm^(2).`

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BEYOND PUBLICATION-MENSURATION-EXERCISE
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  7. The volume of a hemi-sphere is 2425 1/2 cm^3. Find its curved surface ...

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  8. A cylinderical bucket, 32cm high and with radius of base 18 cm, is fil...

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  9. The diameter of the internal and external surfaces of a hollow hemispe...

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  10. 2.2 cubic Dm of brass is to be drawn into a cylinderical wire 0.25 cm ...

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  11. The rain water from a roof of 22 m xx 20 m drains into a cylinderical ...

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  12. A right circular cone is 3.6 cm high and radius of its base is 1.6 cm....

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  14. A metallic sphere of radius 4.2 cm. is melted and recast into the shap...

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  15. A circus tent is cylindrical upto a height of 3 m and conical above it...

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  16. A wooden article was made by scooping out a hemisphere from each end o...

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  17. A tent is in the shape of a cylinder surmounted by a conical top. If t...

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  18. A solid is composed of a cylinder with hemi-spherical ends. If the who...

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  19. A cylindrical vessel with internal diameter 10 cm and height 10.5 cm i...

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  20. A cylinder road roller made of iron is 1 metre long. Its internal diam...

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