Circles
Math ⇒ Geometry
Circles starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Circles.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A chord of length 12 cm is at a distance of 5 cm from the center of a circle. Find the radius of the circle.
A circle has a radius of 8 cm. What is the length of the tangent from a point 17 cm from the center?
Explain the concept of concentric circles.
If the circumference of a circle is 31.4 cm, what is its radius? (Use π = 3.14)
If the length of a tangent from a point 13 cm away from the center of a circle is 12 cm, what is the radius of the circle?
If two circles of radii 5 cm and 3 cm touch each other externally, what is the distance between their centers?
State the relationship between the angle at the center and the angle at the circumference subtended by the same arc.
A circle passes through the points (2,3), (6,7), and (8,3). Find the center and radius of the circle.
If the length of a chord of a circle is equal to the radius of the circle, what is the angle subtended by the chord at the center?
Prove that the angle subtended by the same chord at the center is twice the angle subtended at any point on the remaining part of the circle.
