7th Grade Milestone Review - Circumference and Area of Circles

Front

What is the radius of a circle?

Back

The radius is the distance from the center of the circle to any point on its circumference.

Front

What is the formula for the circumference of a circle?

Back

C = πd or C = 2πr, where d is the diameter and r is the radius.

Tags

CCSS.7.G.B.4

Front

If a circle has a radius of 6 ft, what is its circumference?

Back

The circumference is 37.68 ft.

Tags

CCSS.7.G.B.4

Front

What is the diameter of a circle?

Back

The diameter is twice the radius, or the distance across the circle through its center.

Tags

CCSS.HSG.C.A.2

Front

How do you calculate the area of a circle?

Back

A = πr², where A is the area and r is the radius.

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi)?

Back

π is approximately 3.14.

Tags

CCSS.HSG.GMD.A.1

Front

If the diameter of a circle is 16, what is the radius?

Back

The radius is 8.

Tags

CCSS.7.G.B.4

Front

What is the circumference of a circle with a diameter of 10?

Back

The circumference is approximately 31.4.

Tags

CCSS.7.G.B.4

Front

If you need to find the distance around a circle, which formula should you use?

Back

Use C = πd.

Tags

CCSS.7.G.B.4

Front

What is the area of a circle with a radius of 5?

Back

The area is approximately 78.5.

Tags

CCSS.7.G.B.4