unit 9 review

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Steven purchases a bowl. The diameter of the bowl is 14 cm.
What is the distance around the bowl?

• 21.98 cm
• 43.98 cm
• 87.96 cm
• 7 cm

The radius of a circle is 6.5 inches.

Find the circumference of the circle.

• 132.7 in

• 40.8 in

• 20.4 in

• 572.3 in

The distance halfway across the circle is called the...

• radius
• diameter
• circumference
• area

The distance from the center of the circle to any point on the circle is called the...

• radius
• diameter
• circumference
• area

The distance all the way around the circle is called the...

• radius
• diameter
• circumference
• area

If you multiply 2 × r  then you will get the...

• radius
• diameter
• circumference
• area

If a circle has a radius of 10 ft. then which statement is true?

• The radius is 5 ft. 
•  The diameter is 5 ft
• The radius is 20 ft.
• The diameter is 20 ft.

Calculate the circumference of circle that has a diameter of 15.

• 47.1

• 706.9

• 23.6

• 176.7

Which of these numbers is the height?

• 10

• 5

• 4