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Tick the correct answer in the following and justify your choice:If the perimeter and the area of the circle are numerically equal,then the radius of the circle is

A

2 units

B

`pi` units

C

4 units

D

7 units

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R G PUBLICATION-AREAS RELATED TO CIRCLES-EXERCISE
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  3. Tick the correct answer in the following and justify your choice:If th...

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  4. Find the area of a sector of a circle with radius 6 cm if angles of th...

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  5. Find the area of a quadrant of a circle whose circumference is 22 cm.

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  6. The length of the minute hand of a clock is 14 cm.Find the area swept ...

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  7. A chord of a circle of radius 10 cm subtends a right angle at the cent...

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  8. A chord of a circle of radius 10 cm subtends a right angle at the cent...

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  9. In a circle of radius 21 cm,an arc subtends an angle of 60^@ at the ce...

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  10. In a circle of radius 21 cm,an arc subtends an angle of 60^@ at the ce...

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  11. In a circle of radius 21 cm,an arc subtends an angle of 60^@ at the ce...

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  12. A chord of circle of radius 15 cm subtends an angle of 60^@ at the cen...

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  13. A chord of a circle of radius 12cm subtends an angle of120^@at the cen...

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  14. A brooch is made with silver wire in the form of a circle with diamete...

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  15. A brooch is made with silver wire in the form of a circle with diamete...

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  16. An umbrella has 8 ribs which are equally spaced (see Fig.12.13). Assu...

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  17. A car has two wipes which do not overlap.Each wiper has a blade of len...

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  18. To warn ships for underwater rocks,a lighthouse spreads a red coloures...

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  19. A round table cover has six equal designs as shown in Fig.12.14. If th...

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  20. Tick the correct answer in the following :Area of a sector of angle p(...

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