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 8
A circle has a circumference of 18.84 cm. What is its diameter? (Use π = 3.14)
A circle has a circumference of 31.4 cm. What is its radius? (Use π = 3.14)
A circle has a diameter of 16 cm. What is its area? (Use π = 3.14)
A circle has a radius of 2 cm. What is its area? (Use π = 3.14)
A circle has a radius of 3.5 cm. Find its circumference. (Use π = 3.14)
A circle with center O has a radius of 8 cm. What is the length of a diameter?
Calculate the area of a circle with a radius of 5 cm. (Use π = 3.14)
If a circle has a diameter of 12 cm, what is its radius?
If a circle has a radius of 10 cm, what is its area? (Use π = 3.14)
If the area of a circle is 154 cm², what is its radius? (Use π = 3.14)
If the area of a circle is 50.24 cm², what is its radius? (Use π = 3.14)
If the circumference of a circle is 44 cm, what is the diameter? (Use π = 3.14)
If the diameter of a circle is 20 cm, what is its circumference? (Use π = 3.14)
If the radius of a circle is 7 cm, what is its diameter?
If the radius of a circle is doubled, how does the area change?
What is the formula for the area of a circle in terms of its radius r?
What is the formula for the circumference of a circle in terms of its radius r?
What is the name of the angle whose vertex is at the center of the circle and whose sides are radii?
What is the name of the line segment that passes through the center of a circle and has its endpoints on the circle?
What is the name of the part of a circle between two points on the circle?
