Pi Circumference and Area of Circle

The perimeter of a circle is also known as the ______of the circle

• area

• arc

• circumference

Ratio of circumference to diameter is a constant and it is denoted as ____.

Tags

CCSS.HSG.GMD.A.1

Can you say that the circumference of a circle is always more than three times its diameter?

• Yes

• No

Tags

CCSS.7.G.B.4

Find the area of a circle whose radius is 21 cm.

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 78.5 cm

• 15.7 cm

• 7.85 cm

• 19.6 cm

Tags

CCSS.7.G.B.4

Find Circumference. Leave answer in terms of pi (π).

• 36π

• 9π

• 4.5π

• 18π

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 18.8 cm

• 113 cm

• 37.7 cm

• 452.2 cm

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 14.13 cm

• 63.56 cm

• 28.26 cm

• 127.17 cm

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 31.4 cm

• 78.5 cm

• 314 cm

• 15.7 cm

Tags

CCSS.7.G.B.4

What is Pi?

• Ratio of Circumference to diameter

• The distance around the outside of a circle

• The distance from one side of a circe to the other through the center

• The distance from the center of a circle to the outside

Tags

CCSS.7.G.B.4