Circles

The area of a circle is numerically equal to its circumference. Find the diameter of the circle. ...

If the sum of the diameters of two circles is 30 cm and the difference of their radii is 5 cm, then the ratio of the are...

The area of the largest circle that can be drawn inside a rectangle with sides 63 cm and 42 cm is (in $cm^2$) : (Take...

**Question Statement:** If the circumference of a circle is increased by 20%, then the area of the circle will be incr...