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A sector is cut off from a circle of rad...

A sector is cut off from a circle of radius 21 cm. The angle of the sector is `150^(@)`. Find the length of its arc and the area.

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The correct Answer is:
`462 cm^(2)`
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NAGEEN PRAKASHAN-AREA RELATED TO CIRCLES-Exercise 12 B
  1. A sector is cut off from a circle of radius 21 cm. The angle of the se...

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  2. A horse is placed for grazing inside a rectangular field 70 m by 52...

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  3. A paper is in the form of a rectangle ABCD where AB = 21 cm and BC = 1...

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  4. Quadrilaterl PQRS is a rectangle. Two sectors with centres R and S are...

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  5. A pendulum swings through an angle of 30^(@) and describes an arc 8.8 ...

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  6. The perimeter of a certain sector of a circle of radius 5.7 m is 27.2 ...

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  7. The radius of a circle is 14 cm and the area of the sector is 102.7 cm...

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  8. A chord PQ of a circle of radius 10 cm makes an angle of 60^(@) at the...

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  9. The length of a wire which is tied as a boundary of a semi ciruclar pa...

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  10. AOBC is a quadrant of a circle of radius 10 cm. Calculate the area of ...

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  11. In the square ABCD with side 2a cm, four quarter circles are drawn wit...

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  12. A park is in the form of a rectangle 120 m x 100 m. At the centre of ...

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  13. In the figure semicircles are drawn with PQ, PB and BQ as diameter. PB...

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  14. In the figure, in Delta ABC, angle B = 90^(@), AB = 28 cm and BC = 21 ...

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  15. The length of the minute hand of a clock is 10.5 cm. Find the area swe...

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  16. A chord 10 cm long is drawn in the circle whose radius is 5 sqrt2 cm. ...

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  17. In a right -angle triangle, the length of the sides containing the rig...

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  18. In the given figure, ABCD is a square of side 7 cm. DPBA and DQBC are ...

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  19. In the given figure, three semicircles are drawn of diameter 10 cm, 7 ...

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  20. From a thin metallic sheet in the shape of a trapezium ABCD in which A...

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