Circles - radius, diameter, circumference, area

Front

What is the area of a circle?

Back

The region enclosed by a circle's circumference.

Front

What is the value of Pi used in circle calculations?

Back

3.14

Tags

CCSS.HSG.GMD.A.1

Front

Define the circumference of a circle.

Back

The total distance around a circle.

Tags

CCSS.7.G.B.4

Front

What is the radius of a circle?

Back

The distance from the center of a circle to the circumference.

Front

How do you calculate the circumference of a circle?

Back

Circumference = 2 * Pi * radius.

Tags

CCSS.7.G.B.4

Front

What is the formula for the area of a circle?

Back

Area = Pi * radius^2.

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 10, what is its area?

Back

Area = 3.14 * 10^2 = 314.

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle?

Back

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

Tags

CCSS.HSG.C.A.2

Front

How do you find the radius if you know the diameter?

Back

Radius = Diameter / 2.

Tags

CCSS.7.G.B.4

Front

What is the relationship between radius and diameter?

Back

Diameter = 2 * radius.

Tags

CCSS.7.G.B.4