Circles for 7th grade

Front

What is the distance from the center to any point on the circle?

Back

Radius

Front

If the circumference of a circle is 22 ft, what is the radius?

Back

11 ft

Tags

CCSS.7.G.B.4

Front

Tom has a circular clock with a circumference of 39.88 inches. What is the radius of Tom's clock, to the nearest hundredth of an inch? (Use 3.14 for pi)

Back

6.35 inches

Tags

CCSS.7.G.B.4

Front

If the radius of a circle is 5 feet, what is the area?

Back

78.5 feet squared

Tags

CCSS.7.G.B.4

Front

Jack cut out two fabric circles of different sizes in his art class. The larger circle has a circumference of 22 inches, and the smaller circle has a circumference of 14 inches. What is the total area, to the nearest hundredth of a square inch, of the two circles? (Use 3.14 for pi)

Back

54.14 square inches

Tags

CCSS.7.G.B.4

Front

What is the formula for the circumference of a circle?

Back

C = 2πr or C = πd

Tags

CCSS.7.G.B.4

Front

What is the formula for the area of a circle?

Back

A = πr²

Tags

CCSS.7.G.B.4

Front

What is the value of π (pi) approximately?

Back

3.14

Tags

CCSS.HSG.GMD.A.1

Front

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

Back

5 feet

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Diameter is twice the radius (d = 2r).

Tags

CCSS.7.G.B.4