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If `A B` is a chord of length `5sqrt(3)` cm of a circle with centre `O` and radius 5 cm, then area of sector `O A B` is (a) `(3pi)/8c m^2` (b) `(8pi)/3c m^2` (c) `25pi\ c m^2` (d) `(25pi)/3c m^2`

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RD SHARMA ENGLISH-AREAS RELATED TO CIRCLES-All Questions
  1. If the difference between the circumference and radius of a circle ...

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  2. The area of a circular path of uniform width h surrounding a circu...

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  3. If A B is a chord of length 5sqrt(3) cm of a circle with centre ...

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  4. The area of a circle whose area and circumference are numerically e...

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  5. If diameter of a circle is increased by 40%, then its area increase...

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  6. In Fig. 15.107, the shaded area is (FIGURE) (a) 50(pi-2)c m^2 (b) ...

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  7. In Fig. 15.108, the area of the segment P A Q is (FIGURE) (a) (a^2)/4(...

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  8. In Fig. 15.109, the area of segment A C B is (FIGURE) (a) (pi/3-(sq...

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  9. If the area of a sector of a circle bounded by an arc of length 5pi ...

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  10. In Fig. 15.110, the ratio of the areas of two sectors S1 and S2 is ...

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  11. If the area of a sector of a circle is 5/(18) of the area of the cir...

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  12. If the area of a sector of a circle is 7/(20) of the area of the ci...

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  13. In Fig. 15.111, if A B C is an equilateral triangle, then shaded ar...

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  14. In Fig. 15.112, the area of the shaded region is (FIGURE) (a) 3pi\ c...

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  15. If the perimeter of a circle is equal to that of a square, then the...

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  16. 13. The radius of a circle is 20cm. Three more concentric circles are ...

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  17. The area of a sector whose perimeter is four times its radius r uni...

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  18. If a chord of a circle of radius 28 cm makes an angle of 90o at ...

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  19. If area of a circle inscribed in an equilateral triangle is 48pi sq...

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  20. The hour hand of a clock is 6 m long. The area swept by it between ...

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