This is an MCQ-based quiz for GRE on The Radius Of A Circle.

The radius of a circle is the distance from the circle's center to any point on its circumference. It is usually denoted by 'R' or 'r'.

Start Quiz

What is the circumference of a circle with an area of 36π?

15π None of the other answers 12π 32

Which is greater: the circumference of a circle with an area of 25π in^2, or the perimeter of a square with side length 7 inches?

The perimeter of the square is greater. The two quantities are equal. The circumference of the circle is greater. The relationship cannot be determined from the information given.

x≥1 Quantity A: The circumference of a circle with radius 24x Quantity B: The area of a circle with a diameter one fourth the radius of the circle in Quantity A Which of the following is true?

Quantity A is larger. Quantity B is larger. The relationship between the two values cannot be determined. The two quantities are equal.

What is the area of a circle, one-quarter of the circumference of which is 5.5 inches?

π/3 225π 121π 121/π

Quantitative Comparison Quantity A: Area of a circle with radius r Quantity B: Perimeter of a circle with radius r

Quantity B is greater. The two quantities are equal. Quantity A is greater. The relationship cannot be determined from the information given.

Quantitative Comparison A circle has a radius of 2. Quantity A: The area of the circle Quantity B: The circumference of the circle

Quantity A is greater. The relationship cannot be determined from the information given. The two quantities are equal. Quantity B is greater.

Quantitative Comparison Quantity A: Area of a right triangle with sides 7, 24, 25 Quantity B: Area of a circle with radius 5

The two quantities are equal. The relationship cannot be determined from the information given. Quantity B is greater. Quantity A is greater.

Circle B has a circumference of 36π. What is the area of circle A, which has a radius half the length of the radius of circle B?

18 18π 81π 324π

Which point could lie on the circle with radius 5 and center (1,2)?

(3,4) (4,6) (–3, 6) (3,–2) (4,–1)
Quiz/Test Summary
Title: The Radius of a Circle
Questions: 9
Contributed by: