Area and Perimeter Circles

Mathematical Equivalence

ON

Tags

Circumference

Mathematical Equivalence

ON

Tags

Area

Mathematical Equivalence

ON

Tags

Area

Mathematical Equivalence

ON

Tags

Area

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

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 28.26 m²

Tags

CCSS.7.G.B.4

Five Italian chefs came together to bake the world’s largest pizza. Its diameter is 131 feet long! Which of these is closest to the area of the pizza? Round to the nearest whole number.

• 13471 ft²

• 411 ft²

• 206 ft²

• 4290 ft²

Tags

TEKS.MATH.6.8D

The largest cookie ever baked measured a radius of 51 feet.  Which of these is the closest to the area of the cookie?  

• 2601 ft²

• 8167 ft²

• 2042 ft²

• 162 ft²

Tags

CCSS.7.G.B.4

The diameter of a circle is 8 inches
The perimeter and area are:

• P = 4 pi and A = 12 pi

• P = 16 pi and A = 8 pi    

• P = 8 pi and A = 16 pi

• P = 16 pi and A = 4 pi  

Tags

CCSS.7.G.B.4

Match the following definitions to the terms:

• The distance around a circle

• Units of circumference

• How much space a circle takes up

• Area of a circle

• feet, cm, inches

• Units of area

• square units (units²)

• Circumference of a circle

Tags

CCSS.7.G.B.4

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

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

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

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

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

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

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

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