Circles Area and Perimeter

Find the perimeter

Tags

CCSS.3.MD.D.8

Find the area

Find the perimeter

Tags

CCSS.3.MD.D.8

Find the perimeter

Tags

CCSS.3.MD.D.8

Sort the problems into two groups based on whether you would use the circumference or the area of the circle to answer the question.

Groups:

(a) Circumference

,

(b) Area

• How many square inches of cheese fit on a slice of pizza?

• How fast do you go when riding a Ferris Wheel?

• How far does a unicycle move when the wheel makes 5 full rotations?

• How many times must a horse go around a horse walker to walk 1 mile?

• How much room is there to spread frosting on a cookie?

• How much fabric is needed for a round table cloth?

• How much green space is there inside a traffic roundabout?

• How many feet are traveled by a person riding once around a merry-go-round?

Match the following definitions to the terms:

• Area of a circle

• feet, cm, inches

• Units of circumference

• square units (units²)

• Circumference of a circle

• How much space a circle takes up

• Units of area

• The distance around a circle

Tags

CCSS.7.G.B.4

The area formula for a circle is ​ (a)   = ​ (b)   ​ (c)  

• A
• 2
• r
• a

Tags

CCSS.7.G.B.4

Find the perimeter

Tags

CCSS.3.MD.D.8

Find the area

Find the perimeter

Tags

CCSS.3.MD.D.8