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An archery target has three regions form...

An archery target has three regions formed by three concentric circles in Fig. 12.73. If the diameters of the concentric circles are in the ratio 1:3:5. then find the ratio of the areas of three regions.

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VK GLOBAL PUBLICATION-AREAS RELATED TO CIRCLES-Proficiency Exercise (Long Answer Questions)
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  5. Find the area of the segment of a circle of radius 12 cm whose corresp...

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  6. Find the area of the sector of a circle of radius 7cm, if the correspo...

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  7. A cow is tied with a rope of length 7 cm at the corncr of a triangular...

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  8. The length of the minute hand of a clock is 6.3 cm. Find the area swep...

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  9. Find the difference of the area of a sector of angle 90^@ and its core...

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  10. Find the differnce of the areas of two segments of a circle formed by ...

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  11. On a square cardboard sheet of area 784 cm^(2) , four congruent circul...

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  12. Area of a sector of central angle 200^(@) of a circle is 770 cm^(2) . ...

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  13. In the given figure ABCD is a trapezium in which AB||DC, AB=18cm, DC=...

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  14. Find the area of the shaded region given in Fig. 12.72.

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  15. All the vertices of a rhombus lie on a circle. Find the area of the rh...

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  16. Find the number of revolutions made by a circular wheel of area 6.16 m...

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  17. An archery target has three regions formed by three concentric circles...

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  18. With vertices A, B and C of a triangle ABC as centres, arcs are drawn ...

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  19. . In the following figure, PQRS is square lawn with side PQ = 42 metre...

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