Area Perimeter and Circles

What is the area of the trapezoid?

• 52 sq m

• 26 sq m

• 65 sq m

• 32.5 sq m

What is the radius of this circle?

• 18 in

• 36 in

• 9 in

• 8 in

What is the circumference?

• 36

• 56.55 

•  113.09

• 226.19

Find the circumference (to the nearest whole number)

• 88 in

• 44 in

• 116 square in

• None of the above

Match the following definitions to the terms:

• The distance around a circle

• Units of area

• How much space a circle takes up

• Circumference of a circle

• square units (units²)

• Area of a circle

• feet, cm, inches

• Units of circumference

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 fast do you go when riding a Ferris Wheel?

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

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

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

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

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

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

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

Find the area of the circle

• 100 cm

• 225 cm

• 9 cm

• 28.26 cm

What is the area of this circle?

• 163.2 cm²

• 15.3 cm²

• 124.2 cm²

• 113.1 cm²

Find the area of this rectangle:

• 26 centimeters

• 40 square centimeters

• 35 square centimeters

• 13 centimeters

Find the perimeter of this triangle.

• 240 ft

• 56 ft

• 66 ft

• 120 ft