Exploring Circle Area and Circumference

What is the radius of this circle?

• 6

• 4

• 3

• 0

Tags

CCSS.7.G.B.4

Radius: 7 yards Circumference:

• 14

• 153.86

• 21.98

• 43.96

Tags

CCSS.7.G.B.4

A circular railroad-crossing sign has a diameter of 30 inches. Which measurement is closest to the area of the sign in square inches?

• 94.2 sq in

• 188.4 sq in

• 706.5 sq in

• 286.6 sq in

Tags

CCSS.7.G.B.4

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

Tags

CCSS.7.G.B.4

What is the diameter?

• 5 in

• 10 in

• 3.14 in

• 15.84 in

Tags

CCSS.7.G.B.4

If the diameter is 10, what is the circumference?

• 15.70796327

• 31.41592654

Tags

CCSS.7.G.B.4

In words, describe this formula

• The area of a circle is equal to pi times the radius squared

• The circumference of a circle is equal to the pi times the diameter.

• The circumference of a circle is equal to pi times the radius squared

• The area of a circle is equal to pi times the diameter

Tags

CCSS.7.G.B.4

A Circle has a radius of 4. What is the circumference of the circle? (Best Choice)

• 4π or about 12.56

• 16π or about 50.24

• 2π or about 6.28

• 8π or about 25.12

Tags

CCSS.7.G.B.4

Mrs. Wilson placed the welcome mat shown below on her front door step. What is the area of her welcome mat in square feet? Round to the nearest tenth.

• A = 36.4 in sq

• A = 50.2 in sq

• A = 31.4 in sq

• A = 25.1 in sq

Tags

CCSS.7.G.B.4

Radius: 6 feet Circumference:

• 36.1

• 12

• 37.68

• 18.81

Tags

CCSS.7.G.B.4