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Fig. depicts an archery target marked wi...

Fig. depicts an archery target marked with its five scoring areas from the centre outwards as Gold, Red, Blue, Black and White. The diameter of the region representing Gold score is 21 cm and each of the other bands is 10.5 cm wide. Find the area of each of the five scoring regions.

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MBD-Areas of Plane Figures.-Exercise
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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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