Circles: Area Circumference, Radius, and Diameter

The distance across the circle is called the...

• radius
• diameter
• circumference
• area

The distance from the center of the circle to any point on the circle is called the...

• radius

• diameter

• area

• circumference

If the radius of a circle is 8 cm, the diameter is 16 cm.

• TRUE

• FALSE

Tags

CCSS.7.G.B.4

12 inches in this circle represents its

• radius

• diameter

Tags

CCSS.HSG.C.A.2

Find the circumference of the circle

• 50.24 yd

• 25.12 yd

• 11.14 yd

Tags

CCSS.7.G.B.4

Find the circumference of the circle whose diameter is 10 m

• 31.4 m

• 62.8 m

• 15.7 m

Tags

CCSS.7.G.B.4

What number represents π?

• 31.4

• 4.13

• 3.14

• 34.1

Tags

CCSS.HSG.GMD.A.1

What does C represent in the formula:

C = π·d

• Pi

• Circumference

• Diameter

• Area

Tags

CCSS.7.G.B.4

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Tags

CCSS.7.G.B.4

What is the formula for area of a circle?

• A = π×r²
• A = 2×π×r

Tags

CCSS.7.G.B.4