Parts of a Circle, Circumference and Area of a Circle

What is the radius of this circle?

• 18

• 36

• 9

• 8

Tags

CCSS.7.G.B.4

What number is pi?

• 41

• 00

• 3.14

• 5.14

Tags

CCSS.HSG.GMD.A.1

What is the distance around a circle?

• Circumference

• Area

• Diameter

• Radius

what is the circumference of this circle ?

• 3.14 cm 

• 37.68 cm

• 24 cm

• 68.4 cm

Tags

CCSS.7.G.B.4

A Circle has a radius of 4.  What is the area of the circle? (Best Choice) (note: units are squared)

• 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

A Circle has a diameter of 10 centimeters.  What is the area of the circle? (Best Choice)

• 5π or about 15.7 cm²

• 10π or about 31.4 cm²

• 25π or about 78.5 cm²

• 100π or about 314 cm² 

Tags

CCSS.7.G.B.4

The circumference of a circle is

• The measurement from an edge of a circle to another edge.

• The measurement around the circle

• The measurement from an edge of a circle to another edge going through the center

• The measurement from the center of the circle to an edge of the circle

Other than the formula C=πd what is another formula for circumference of a circle?

• C=2π

• C=2πr

• C=πr²

• C=πd²

Tags

CCSS.7.G.B.4

Meg swam from one side of her circular pool to the other side going through the center.  If Meg swam 8 feet, what is the approximate circumference of Meg's pool?

• 16 feet

• 25.12 feet

• 251.2 feet

• 4 feet

Tags

CCSS.7.G.B.4

Is the red line a radius or diameter of the circle?

• Radius

• Diameter