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A copper wire, when bent in the form of ...

A copper wire, when bent in the form of a square, encloses an area of 484 `c m^2dot` If the same wire is bent in the form of a circle, find the area enclosed by it. (Use `pi=(22)/7)dot\ `

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RD SHARMA ENGLISH-MENSURATION-2-All Questions
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  2. The area of a circle is 616 c m^2dot Find the radius of the circle.

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  6. Find the area of the shaded region given in Fig. 12.72, where ABCD is ...

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  8. The areas of two circles are in the ratio 16 : 25. Find the ratio of t...

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  9. A square park has each side of 100 m. At each corner of the park, t...

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  10. Four equal circles are described about the four corners of a square...

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  12. P Q R S is a diameter of a circle of radius 6 cm. The lengths P Q ,\...

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  13. Find the area of a circle whose radius is (a)7 cm    (b) 2.1 m (c)...

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  14. Find the area of a circle whose diameter is (a)8.4 cm    (b) 5.6 m (c)...

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  15. The area of a circle is 154 c m^2dot Find the radius of the circle.

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  16. Find the radius of a circle, if its area is (a)4\ pi\ c m^2 (b) 55. 4...

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  17. The circumference of a circle is 3.14 m, find its area.

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  18. If the area of a circle is 50. 24\ m^2 , find its circumference.

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  19. A horse is tied to a pole with 28 m long string. Find the area wher...

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  20. A steel wire when bent in the form of a square encloses an area of ...

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