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The shaded portion of the figure, given ...

The shaded portion of the figure, given alongside, shows two concentric circles.
If the circumference of the two circles be 396 cm and 374 cm, find the area of the shaded portion.

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The correct Answer is:
1347.5 `cm^(2)`
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ICSE-AREA AND PERIMETER OF PLANE FIGURES-EXERCISE 20(C)
  1. The diameter of two circles are 32 cm and 24 cm. Find the radius of th...

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  2. The radius of a circle is 5 m. Find the circumference of the circle wh...

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  3. The circle of largest area is cut from a rectangular piece of card-boa...

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  4. The following figure shows a square card-board ABCD of side 28 cm. Fou...

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  5. The radii of two cirlces are in the ratio 3 : 8. If the difference be...

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  6. The diameters of three circles are in the ratio 3 : 5 : 6. If the sum...

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  7. Find the area of a ring shaped region enclosed between two concentric ...

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  8. The circumference of a given circular park is 55 m. It is surrounded b...

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  9. There are two circular gardens A and B. The circumference of garden ...

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  10. A wheel had diameter 84 cm. Find how many complete revolutions must it...

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  11. The wheels of a car are of diameter 80 cm each. How many complete r...

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  12. An express train is running between two stations with a uniform speed....

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  13. The minute hand of a clock is 8 cm long. Find the area swept by the m...

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  14. The shaded portion of the figure, given alongside, shows two concentri...

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  15. In the figure, the area of the shaded portion is 770 cm^(2). If the ci...

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  16. The cost of fencing a circular field at the rate of Rs 240 per metre i...

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  17. Two circles touch each other externally. The sum of their areas is 58...

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  18. The given figure shows a rectangle ABCD inscribed in a circle as shown...

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  19. A square is inscribed in a circle of radius 7 cm. Find the area of the...

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  20. A metal wire, when bent in the form of an equilateral triangle of larg...

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