Area and Circumference Review

Hannah drew a circle with a radius of 30 cm. Jonas drew a circle with a radius of 20 cm. What is the approximate difference in the areas of their circles?

• 2,826 cm²

• 1,570 cm²

• 1,256 cm²

• 314 cm²

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

• 18pi

• 108pi

• 36pi

Tags

CCSS.7.G.B.4

Find the area of the circle.

• 176.6 cm²

• 706.5 cm²

• 23.6 cm²

• 50.24 cm²

Tags

CCSS.7.G.B.4

Find the area of the rectangle.

• 36 in.²

• 72 in.²

• 26 in.²

• 13 in.²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the diameter?

• 8

• 16

• 10

• 4

Tags

CCSS.7.G.B.4

What is the radius?

• 18

• 72

• 38

• 14

Tags

CCSS.7.G.B.4

Find the area of the circle.

• 18.84 m²

• 113.04 m²

• 37.68 m²

• 452.16 m²

Tags

CCSS.7.G.B.4

What does area mean?

• the distance around a shape

• half the distance around a shape

• the amount of space outside a shape

• the amount of space inside a shape

Select all of the formulas below that can be used to find the circumference of a circle.

• πd

• πr²

• πdr

• 2rπd

• 2πr

Tags

CCSS.7.G.B.4