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Find the area of the shaded region in fi...

Find the area of the shaded region in fig., where a circular arc of radius 6 cm has been drawn with vertex O of an equilateral triangle OAB of side 12 cm as centre.

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MBD-Areas of Plane Figures.-Exercise
  1. Find the area of the shaded region in fig., where a circular arc of ra...

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  2. A bicycle wheel makes 500 revolutions in moving 11 km. Find the diamet...

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  3. The area of a circle is equal to the sum of the areas of the two circl...

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  4. The diameters of two circles are in the ratio of 4 : 3and the sum of t...

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  5. The circumference of a circle is numerically equal to its area. Show t...

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  6. The area enclosed between two concentric circles is 770 sq. cm given t...

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  7. The circumference of a circle exceeds its diameter by 30. Find the cir...

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  8. The cost of mowing the grass inside of circular lawn at the rate of Rs...

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  9. A wire is in the form of a circle with diameter 21 cm. It is cut and b...

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  10. Two circles of radii 15 cm and 8 cm touch each otherinternally. Find t...

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  11. The radii of two circles are 8 cm and 6 cm respectively. Find the radi...

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  12. A road, which is 7 m wide surrounds a circular path whose circumferenc...

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  13. A chord of a circle of radius 12 cm subtends an angle of 120^@ at the ...

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  14. In a circle of radius 21 cm, an arc subtends an angle of 60° at the ce...

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  15. The radius of a semi-circular protactor is 14 cm. Find its perimeter a...

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  16. The circumference of a circle is 88 cm. Find the area of the sector, w...

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  17. The perimeter of a sector of a circle of radius 5.8 m is 27.2 m. Find ...

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  18. A chord of a circle of radius 21 cm subtends an angle of 120^@ at the ...

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  19. Find the radius of the circle if length of the arc is 4pi cm and angle...

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  20. A square is made inside the circle. Find the area of that portion of t...

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  21. In the fig. fourth quadrant of a circle is OACB where O is the centre ...

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