Circle Review

Circle Review

Multiple Choice

• (x+1)² + (y +1)² = 3

• (x+1)² + (y -1)² = 3

• (x+1)² + (y +1)² = 9

• (x-1)² + (y -1)² = 9

Multiple Choice

What is the equation for this circle?

• (x+1)+(y+1)=9

• x²+y²=9

• x+y=9

Multiple Choice

In the equation (x-3)²+(y-2)²=16, the center of the circle is...

• (3,2)

• (-3, -2)

• (-2, -3)

• (2, 3)

Multiple Choice

In the equation (x+2)²+(y-3)²=4, the radius of the circle is...

• 4

• 2

• 3

• 16

Multiple Choice

Write the equation of a circle with center (7, 0) with radius 3.

• (x - 7)² + y² = 9

• x² + (y -7)² = 9

• (x - 7)² + y² = 3

• x² + (y -7)² = 3

Multiple Choice

What is the equation of a circle whose diameter is 24 and whose center is at the origin?

• x²+y²=125

• x²+y²=64

• x²+y²=144

• x²+y²=576

Multiple Choice

Determine whether segment MP is tangent to the circle.

• YES

• NO

Multiple Choice

What is the value of x?

• 22

• 25

• 15

• 20

Multiple Choice

Find x. Assume that segments that appear to be tangent are tangent.

• 11.2

• 18.0

• 25.0

• 30.0

Multiple Choice

Assume that all the lines that appear tangent are tangent. Find the perimeter

• 54

• 36

• 48

• 42

Multiple Choice

Find the measure of arc AB.

• 17 degrees

• 34 degrees

• 68 degrees

• 146 degrees

Multiple Choice

Solve for x.

• 5

• 20

• 40

• 85

Multiple Choice

Find the measure of arc JH

• 93

• 130

• 120

• 95

Multiple Choice

Find the measure of <F

• 46

• 5

• 90

• 1.8

Multiple Choice

Find m∠PRQ.

• 39°

• 90°

• 51°

• 15°

Multiple Choice

What is m∠ACB?

• 67.5°

• 90°

• 22.5°

• 45°

Multiple Choice

Find the value of x.

• 15

• 13

• 3

• 6

Multiple Choice

• 14

• 12

• 19

• 17

Multiple Choice

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

Multiple Choice

Find the arc length.  Leave your answer in terms of π.

• 7/4π cm
• 7/2π cm
• 1/5π cm
• 45π cm

Multiple Choice

Steven purchases a bowl. The diameter of the

bowl is 14 cm. What is the circumference of the

bowl?

• 28 cm

• 43.98 cm

• 87.96 cm

• 7 cm

Multiple Choice

In circle O, the radius is 4, and the measure of minor arc AB is 120 degrees. Find the length of minor arc AB to the nearest integer.

• 5

• 9

• 8

• 6

Multiple Choice

Find the area of the circle below.

• 8.76 cm²

• 18.52 cm²

• 21.90 cm²

• 28.26 cm²

Multiple Choice

What is the radius of a circle with an area of 49π?

• 49

• 10

• 7

• 14

Multiple Choice

Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer to the nearest tenth of a square inch.

• 25.2 in²

• 28.5 in²

• 31.4 in²

• 38.2 in²

Multiple Choice

A cathedral window is built in the shape of a semicircle. If the window is to contain three stained glass sections of EQUAL SIZE, what is the area of the YELLOW SECTOR?

• 3.3 ft²

• 4.5 ft²

• 6.3 ft²

• 7.1 ft²