Circles

Front

What is the only 2-dimensional measurement of a circle?

Back

Area

Front

If a circle has a radius of 10 ft, what is the diameter?

Back

The diameter is 20 ft.

Front

What is the correct formula for the area of a circle with a diameter of 12 ft?

Back

π(6)(6)

Front

What is the space contained inside of a circle called?

Back

Area

Front

What do you get when you multiply π × r × r?

Back

Area

Front

What is the radius of a circle?

Back

The distance from the center to any point on the circle.

Front

What is the diameter of a circle?

Back

The distance across the circle through the center, equal to 2 times the radius.

Front

What is the circumference of a circle?

Back

The distance around the circle.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr or C = πd.

Front

If the radius of a circle is 4 ft, what is the area?

Back

Area = π(4)(4) = 16π ft².