Area and Circumference Practice

Front

What is the diameter of a circle?

Back

A line that goes from one end of the circle to the other and crosses the center point.

Front

What is the radius of a circle?

Back

The distance from the center of a circle to any point around the edge.

Front

What is the formula for the area of a circle?

Back

Area = π × radius².

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle?

Back

The distance around the edge of a circle; it is the perimeter of a circle.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius.

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 9 in, what is the diameter?

Back

Diameter = 2 × radius = 2 × 9 in = 18 in.

Tags

CCSS.7.G.B.4

Front

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

Back

Radius = Diameter / 2 = 10 in / 2 = 5 in.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 10 in?

Back

Area = π × (10 in)² ≈ 314.16 in².

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a radius of 10 in?

Back

Circumference = 2 × π × 10 in ≈ 62.83 in.

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

The diameter is twice the length of the radius.

Tags

CCSS.7.G.B.4