Circles

Practice Questions

SSAT Upper Level Quantitative (Math) › Circles

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1

A circle on the coordinate plane has center and circumference $20 \pi$ . Give its equation.

2

A circle on the coordinate plane has center and circumference $20 \pi$ . Give its equation.

3

A circle on the coordinate plane has center and area $36 \pi$ . Give its equation.

4

A circle on the coordinate plane has center and area $36 \pi$ . Give its equation.

5

What is the equation of a circle that has its center at and has a radius of ?

6

What is the equation of a circle that has its center at and has a radius of ?

7

A square on the coordinate plane has as its vertices the points . Give the equation of a circle inscribed in the square.

8

Give the area of the circle on the coordinate plane whose equation is

$x^{2}+ y^{2}+ 4x- 8y -11 = 0$ .

9

A square on the coordinate plane has as its vertices the points . Give the equation of a circle inscribed in the square.

10

Which of the following is the equation of a circle with center at the origin and circumference $64 \pi$ ?

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