Unit 7: Circles Midterm Review
12
A circle has a circumference of 12π. What is its diameter?
144 sq ft
A circle has a circumference of 24π feet. What is its area of the circle?
9 square meters
A circle has a circumference of 6π meters. What is its area of the circle?
28π
Find the circumference of a circle with a diameter of 28 in. in terms of pi
8π
Find the circumference of a circle with a radius of 4 in terms of pi.
circumference
The distance around a circle. Also known as the perimeter of a circle.
radius
The distance from the center of a circle to the edge of the circle. It is half of the diameter.
diameter
The distance from the edge of the circle, through the center, to the other edge. It is twice the radius.
diameter
The distance shown is called the ________.
radius
The distance shown is called the ________.
50.2
The radius is 4. What is the area of this circle? Round your answer to the nearest tenth. Use 3.14 for pi.
49π
The radius is 7. What is the area of this circle in terms of pi?