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2. A wire is bent in the form of a circle of radius 28 cm. It is rebent to form a square. The length of the side of the square will be

3. The radius of a circle if its perimeter and area are numerically equal is

5. The diameter of a cycle wheel is 28 cm. The number of revolutions it makes in moving 13.2 km is

6. Find the circumference of the circle, whose area is 144 cm2

7. The area of a circular pizza is 616 cm2. Its diameter is

8. The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 40 cm and 9 cm is:

10. The area of a circle with diameter 6 m exceeds the combined areas of circles with diameters 4m and 2 m by

11. The area of a circular plot is 9856 sq. m. The cost of fencing the plot at the rate of Rs. 6 per meter will be

12. The perimeter (in cm) of a square circumscribing a circle of radius a cm, is

13. If the circumference of a circle increases from 2 to 4 then its area is

15. The radii of two circles are 19 cm and 9 cm respectively. The radius of the circle which has its circumference equal to the sum of the circumferences of the two circles is:

16. The sum of the diameters of two circles is 280 cm and the difference of their circumferences is 88 cm. Then the larger of the two radii is

18. If the perimeter and area of a circle are numerically equal, then the radius of the circle is

21. The length of the line that marks out a circle and its region is the

22. If C is the circumference of a circle of radius r, then perimeter of one of the quadrants will be

23. If the diameter of semicircular protractor is 14 cm, then its perimeter is:

24. The diameter of a circle whose area is equal to the sum of the areas of the two circles of radii 24 cm and 7 cm is

26. A garden roller has a circumference of 4 m. The number of revolutions it makes in moving 40 metres are:

29. The area and circumference of a circle are numerically equal. What is the diameter of the circle?