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The radii of two circles are 8 cm and 6 ...

The radii of two circles are 8 cm and 6 cm respectively. Find the radius of the circle having area equal to the sum of areas of the two circles.

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MBD-Areas of Plane Figures.-Exercise
  1. A wire is in the form of a circle with diameter 21 cm. It is cut and b...

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

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

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

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

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

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

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

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

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

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

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

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

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  14. The length of minute hand clock is 10 cm. Find the area made by minute...

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  15. Two concentric circles have radii 20 cm and 15 cm. Find the area of ri...

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  16. Area of an equilateral triangle is 17300 cm^2. By taking each vertex o...

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  17. Find the perimeter of the circle whose area is 6.16 cm^2.

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  18. Find the area of the circle whose perimeter is equal to the perimeter ...

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  19. When a wire is bent into a square then it covers the area of 121 cm^2....

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  20. A piece of paper is in the form of rectangle ABCD in which AB=18cm,BC=...

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