Area of a Circle and a Sector — Unit test Answers

Circle C is shown. Secants U W and Y W intersect at point W outside of the circle. Secant U W intersect the circle at point V and secant Y W intersects the circle at point X.

Circle D is inscribed with triangle A B C. The measure of arc A B is 76 degrees. Point E is on the circle between points B and C.

Which is true regarding secants and chords?

Circle D is shown. Angle A C B intercepts arc A B. Arc A B has a measure of 76 degrees.

Circle L is shown. Line segments K L and M L are radii. The length of K L is 12. Angle M L K is 60 degrees. Sector M L K with a 60 degree angle is shaded.

A Ferris wheel has a diameter of 42 feet. It rotates 3 times per minute. Approximately how far will a passenger travel during a 5-minute ride?

AD and MN are chords that intersect at point B.

In circle P, diameter QS measures 20 centimeters.

Segments RT and SU are diameters of circle O.

Line segment SU is a diameter of circle V.

In circle N, KL ≅ ML.

Circle D is shown. Line segments E D, F D, and G D are radii. Angle E D F is 80 degrees and angle F D G is 35 degrees. Point H is on the other side of the circle.

In circle O, RT and SU are diameters.

In circle D, ∠EDH ≅ ∠EDG.

Circle O is shown. Chords K M and J L intersect at point A. The measure of arc K J is 170 degrees. The measure of arc L M is 80 degrees.

Circle C is shown. Radius A has a length of r.

Circle D is shown. Line segments D E, D F, D G, and D H are radii. Angle E D F is 55 degrees, angle F D G is 70 degrees, and angle G D H is 110 degrees.

Circle X is shown. Line segment X Y is a radius. Line segment Y Z is a tangent that intersects the circle at point Y. A line is drawn from point Z to point X and goes through a point on the circle. The length of the line segment from point X to the point on the circle is 8, and the length of the line segment from the point on the circle to point Z is 9.

Circle O has a circumference of 36π cm.

Consider circle Y with radius 3 m and central angle XYZ measuring 70°.