Circles and Ratios

Which segment is a radius?

• LM

• DC

• BD

• ML

The definition of a circle is

• set of all points in a plain that are the same distance from a point called the center

• the distance around a share

• a large figure

• a pizza, orange, plum, or watermelon

find the diameter of the circle

• 14 m

• 7 m

• 14

• 3.5 m

Tags

CCSS.7.G.B.4

find the radius of the circle

• 3 m

• 1.5 m

• 1.5

• 1.5 mm

Tags

CCSS.7.G.B.4

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

Tags

CCSS.7.G.B.4

What is the circumference?

• 48

• 96

• 24

• 18

Tags

CCSS.7.G.B.4

What is the circumference?

• 36

• 18π

• 108π

• 36π

Tags

CCSS.7.G.B.4

What is the area of this circle?

• 452.39

• 139.12

• 113.1

• 84.23

Tags

CCSS.7.G.B.4

find the area of the circle below.

• 100 cm

• 225 cm

• 9 cm

• 28.26 cm

Tags

CCSS.7.G.B.4

Consider Circle J.

Calculate the CIRCUMFERENCE of Circle J when the radius is 7 meters.

Use 3.14 for π.

C = 2πr

(a)  

Tags

CCSS.7.G.B.4