# Chapter 11 | Perimeter and Area | Class-7 DAV Secondary Mathematics

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## Chapter 11 Worksheet 5 | Perimeter and Area | Class-7 DAV Secondary Mathematics

1. Find the circumference of a circle whose radius is 7 cm.

2. Find the diameter of a circle whose circumference is 66 m.

3. If circumference of a circle is 176 cm, find its radius.

4. The diameter of a wheel is 1.4 m, find its circumference.

5. The radii of two circles are in the ratio 2 : 3. What is the ratio of their circumferences?

6. The moon is nearly 385000 km away from the earth. It takes a round of the earth every month. How much distance does it travel in one month?

7. The diameter of the wheel of a car is 35 cm. How much distance will it cover in 1000 revolutions?

8. The radius of a wheel of a bus is 0.70 m. How many revolutions will it make in covering 22 km?

9. A wire is in the form of a circle with radius 42 cm. It is bent into a square. Find the sides of the square.

10. The diameter of a circular park is 140 m. Around it on the outside, a path having the width of 7 m is constructed. If the path has to be fenced from inside and outside at the rate of 7 per metre, find its total cost.

11. An athlete runs around a circular park 10 times. If the diameter of park is 280 m, find the distance covered by the athlete In kilometres.

12. A circular piece of thin wire Is converted Into a rhombus of side 11 cm. Find the diameter of the circular piece.

13. A race track is in the form of a ring whose Inner circumference Is 352 m, and the outer circumference is 396 m. Find the width of the track.

14. Radius of a circular region is 63 cm. Find the least length of rope which is sufficient to encircle the circular region.

1. Anonymous

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2. Anonymous

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