The area of a circular playground is $22176 \ cm^2$. What is the cost of fencing this ground at the rate of ₹50 per metre?

If the difference between the circumference and radius of a circle is 37 cm, using π = 22/7, what is the circumference (in cm) of the circle?

Which of the following statements are True in the context of circles?

• A. A tangent of a circle touches it at two points.
• B. A circle can have two parallel tangents at the most.
• C. There is no tangent to a circle passing through a point inside the circle.

Choose the correct answer from the options given below:

The area of the circle that can be inscribed in a square of side 6 cm is:

If the radius of each of four outer circles is $r$, then the radius of the innermost circle is

The equation of the circle which passes through the point $(4,5)$ and its centre at $(2,2)$ is

The radius of two concentric circles are 13 cm and 8 cm. AB is a diameter of the bigger circle. BD is tangent to the smaller circle touching it at D. The length AD is.