Circles Unit Review

Front

Which equation correctly reflects the information shown in the diagram?

Back

(14)(15) = (10)(x)

Front

Circles are...

Back

Sometimes congruent, but always similar

Front

Alison is jogging on a circular track that has a radius of 140 feet. She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

Back

94

Front

What does the r in the standard equation stand for?

Back

r is the radius of the circle

Front

Find the length of the arc. If necessary round to two decimal places.

Back

31.42cm

Front

What is the formula for the circumference of a circle?

Back

C = 2πr

Front

What is the area of a circle?

Back

A = πr²

Front

Define a chord in a circle.

Back

A chord is a line segment with both endpoints on the circle.

Front

What is a diameter?

Back

A diameter is a chord that passes through the center of the circle.

Front

What is the relationship between the radius and diameter?

Back

The diameter is twice the length of the radius.