Circle Geometry Area Circumference

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

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

• Radius

• Diameter

• Chord

• Circumference

The distance between the center and the circumference of a circle is called the ................ of the circle.

• Diameter

• Chord

• Radius

• Center

Say 'TRUE' or 'FALSE'

• TRUE

• FALSE

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

Identify the parts of the circle and show how you would find the area and circumference.

Groups:

(a) radius

,

(b) diameter

,

(c) circumference

,

(d) area

Tags

CCSS.7.G.B.4

This formula is used to find what?

• Area

• Circumference

Tags

CCSS.7.G.B.4

If the area of a circle is 100 cm², what is its circumference?

• 75 cm

• 50 cm

• 35.44 cm

• 20 cm

Tags

CCSS.7.G.B.4

Find the area and circumference of the circle with an 18 inch diameter. Round to the nearest tenth. Area = ​ (a)   Circumference = ​ ​ (b)  

• 1017.9

• 113.1

• 112.9

• 1087.3

• 987.3

• 114.6

Tags

CCSS.7.G.B.4

A circular mirror has a 2 inch frame around it. The mirror itself is 8 inches in diameter. What is the area of the frame? Use 3.14 for pi.

(a)  

Tags

CCSS.7.G.B.4

The area of a circle is 113.04 cm.

The diameter of the circle is ​ (a)  

The radius of the circle is ​ (b)  

• 6 cm

• 12 cm

• 36 cm

• 18 cm

• 9 cm

• 3 cm

• 72 cm

• 24 cm

Tags

CCSS.7.G.B.4