Circumference and Area of Circles

what is the circumference of this circle ?

• 3.14 cm 

• 37.68 cm

• 24 cm

• 68.4 cm

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a radius of 12.5 mm .

• 37.68mm

• 18.84mm

• 78.5mm

• none of the above

Tags

CCSS.7.G.B.4

The circumference is 62.8 inches. What is the radius? (Use 3.14 for π)

• 20 inches

• 10 inches

• 6.28 inches

• 31.4 inches

Tags

CCSS.7.G.B.4

Find the circumference of a circle with a diameter of 11 millimeters.

• 34.6 mm

• 30 mm

• 25.3 mm

• 34.54 mm

Tags

CCSS.7.G.B.4

• 22

• 38.5

• 22.56

• 20

• 39

• 36

Tags

CCSS.7.G.B.4

• 28

• 196

Tags

CCSS.7.G.B.4

• 15 in

• 94.2 in

• 30 in

Tags

CCSS.7.G.B.4

• 78.5

• 490.9

• 76

• 491

• 490

• 75

• 387.2

• 72.8

Tags

CCSS.7.G.B.4

Match the following definitions to the terms:

• The distance around a circle

• Circumference of a circle

• Units of area

• How much space a circle takes up

• Units of circumference

• feet, cm, inches

• square units (units²)

• Area of a circle

Tags

CCSS.7.G.B.4

A circle has the following:

Radius = 3.5, Diameter = 7, Circumference = 21.98 and Area = 38.47

Create the ratio to make pi

​ (a)   divided by ​ (b)  

• 21.98

• 7

• 3.5

• 38.47

Tags

CCSS.7.G.B.4