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How long will John take to make a round of a circular field of radius 21 m cycling at the speed of 8 km/hr?

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RD SHARMA-MENSURATION-2-All Questions
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  4. The hour and minute hands of a clock are 4 cm and 6 cm long respect...

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  5. A rhombus has the same perimeter as the circumference of a circle. ...

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  6. A wire is looped in the form of a circle of radius 28 cm. It is re-...

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  7. A bicycle wheel makes 5000 revolutions in moving 11 km. Find the di...

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  8. A boy is cycling such that the wheels of the cycle are making 140 r...

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  9. The diameter of the driving wheel of a bus is 140 cm. How many revo...

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  10. A water sprinkler in a lawn sprays water as far as 7 m in all direc...

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  11. A well of diameter 150 cm has a stone parapet around it. If the len...

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  12. An ox in a kolhu (an oil processing apparatus) is tethered to a rop...

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  13. Find the area of a circle of radius 4.2 cm

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  14. Find the area of a circle of diameter 7 cm.

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  15. The circumference of a circle is 44 cm. Find its area.

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  16. The area of a circle is 616 c m^2dot Find the radius of the circle.

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  17. A copper wire, when bent in the form of a square, encloses an area ...

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  18. A circular grassy plot of land, 42 m in diameter, has a path 3.5 m ...

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  19. A paper is in the form of a rectangle A B C D in which A B=20\ c m and...

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  20. Find the area of the shaded region given in Fig. 12.72.

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