Adaptive Practice
Circles
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Easy
What is the length of the radius of a circle whose diameter is 14 cm?
Easy
If the circumference of a circle is 44 cm, what is its radius? (Use π = 22/7)
Medium
The area of a circle is 154 cm². Find its radius. (Use π = 22/7)
Hard
A chord of length 24 cm is at a distance of 7 cm from the centre of a circle. Find the radius of the circle.
Easy
If two circles touch each other externally and their radii are 5 cm and 3 cm, what is the distance between their centres?
Medium
The length of an arc of a circle is 11 cm and the radius of the circle is 7 cm. Find the angle subtended by the arc at the centre (in degrees).
Easy
In a circle, if the radius is doubled, by what factor does the area increase?
Hard
Two chords AB and CD of a circle intersect each other at point E inside the circle such that AE = 3 cm, EB = 4 cm, and CE = 6 cm. Find the length of ED.
Medium
The length of a tangent drawn from a point 13 cm away from the centre of a circle of radius 12 cm is:
Medium
If the circumference of a circle is equal to the perimeter of a square with side 14 cm, find the radius of the circle.