Vocabulary
Area of a Circle
Radius, Diameter & Circumference of a Circle
Exponents
Area in words
100

Which word means, "half the distance across a circle"?


radius

100

Find the Area of the circle below:



A = 9pi

100

Find the radius of the circle below:

R = 5

100

62


36

100

A circle has a radius of 5 ft. Find the Area.

A = 25pi

200

Which word means, "the full distance across a circle passing through the center"?

diameter

200

Find the area of this circle:


A = 16pi

200

Find the diameter of the circle below:

D = 14

200

42


16

200

A circle has a Diameter of 10. Find the Area.

A = 25pi

300

Which word means, "the space enclosed inside of a circle". 

Area

300

Find the area of this circle:

A = 144pi

300

What is the circumference of this circle?


C = 6pi

300

22


4

300

Find the area of a circle with a radius of 3.

A = 9pi

400

Which word is the ratio of a circle's circumference divided by it's diameter?

pi

400

The diameter of a circle is 12 in. Find the area of the circle:


A = 36pi

400

What is the circumference of this circle? (" is inches)


C = 8pi

400

32


9

400

Find the area of a circle with a radius of 7.

A = 49pi

500

Which word means, "the distance around a circle"?

Circumference

500

Find the Area of the circle below:


A = 25pi

500

find the circumference of the circle below:

C = 5pi

500

102


100

500

Find the area of a circle with a Diameter of 12.

A = 36pi