8.2 Area and Circumference of Circles Practice

What is the relationship between the radius (r) of a circle and its diameter (D)?

• r = 2D

• r = D/2

• D = r/2

Tags

CCSS.7.G.B.4

What is the diameter?

• 4

• 8

• 10

• 16

Tags

CCSS.7.G.B.4

What is the radius?

• 14

• 18

• 38

• 72

Tags

CCSS.7.G.B.4

What is the diameter?

• 3

• 3.5

• 5

• 7

Tags

CCSS.7.G.B.4

What is the radius of a circle if the diameter is 27?

• 1.35

• 13.5

• 54

Tags

CCSS.7.G.B.4

If the diameter of the large circle is 36 cm, what is the radius of each of the small circles?

• 6 cm

• 12 cm

• 18 cm

• 24 cm

Tags

CCSS.7.G.B.4

What is the formula for the area of a circle?

Tags

CCSS.7.G.B.4

What is the formula for the circumference of a circle?

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 15.7 cm

• 31.4 cm

• 78.5 cm

• 314 cm

Tags

CCSS.7.G.B.4

Find the circumference of the circle.

• 10.99 cm

• 21.98 cm

• 38.47 cm

• 43.96 cm

Tags

CCSS.7.G.B.4