Radius

Practice Questions

GMAT Quantitative Reasoning › Radius

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1

What is the circumference of Circle ?

1.) The diameter of the circle is .

2.) The area of the circle is $25\pi$ .

2

What is the circumference of Circle ?

1.) The radius of the circle is .

2.) The circle is inside another circle of area $81\pi$ .

3

Rectangle is inscribed inside a circle. What is the radius of the circle?

Statement 1:

Statement 2:

4

The equation of a circle can be written in the form

$\left (x-A \right )^{2}+ \left ( y -B\right )^{2} = C$

Give the radius of the circle of this equation.

Statement 1:

Statement 2:

5

Square S is inscribed in circle C as in the figure above. What is the circumference of C?

(1) The perimeter of S is 16.

(2) The area of S is 36.

6

What is the circumference of circle J?

I) Circle J has an area of $\small 64\pi in^2$ .

II) Circle J has a diameter of $\small16 in$ .

7

What is the area of the gray region in the above figure?

Statement 1: The diameter of the larger circle is one mile.

Statement 2: The radius of the smaller circle is 1,320 feet.

8

You are given a circle and a square. Which one has the larger area?

Statement 1: The radius of the circle is two-thirds the sidelength of the square.

Statement 2: The circumference of the circle is $\frac{\pi }{3}$ times the perimeter of the square.

9

Calculate the length of the radius of a circle.

Statement 1): The circumference of the circle is .

Statement 2):

10

Find the radius of circle B

I) Circle B has a circumference of $\small 8\pi m$ .

II) Circle B has an area of $\small 16\pi m^2$ .

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