Circles Practice

what is the formula for finding circumference

select ALL that apply

• c = π d

• c = 2 π r

• d = 2 r

• r = d/2

Tags

CCSS.7.G.B.4

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

Tags

CCSS.7.G.B.4

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

find the diameter of the circle

• 1 ft

• 4 ft

• 4 mm

• 2 ft

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

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

find the area of the circle with radius 3 cm below.

• 100 cm²
• 225 cm²
• 9 cm²
• 28.26 cm²

Tags

CCSS.7.G.B.4

A cruise ship has a large, circular window. It has a diameter of 6 meters. What is the window's approximate circumference?

• 3 m 
• 9.42 m
• 12 m
• 18.84 m

Tags

CCSS.7.G.B.4