Week 27 Circles

The definition of diameter is

• distance from the center of any point on the circle

• distance across the circle through the center

• distance from one point to another

• distance around the circle

The definition of radius is

• distance from one point to another point

• distance around the circle

• distance from the center to any point on the circle

• distance across the circle through the center

what is the formula for finding diameter

• r = 2 d

• d = 2 r

• a = m c²

• c = π 2 r

find the area of the circle below.

• 100 cm
• 225 cm
• 9 cm
• 28.26 cm

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

• 28 cm
• 43.98 cm
• 87.96 cm
• 7 cm

The distance from any point on the outside of a circle to the center of the circle is called what?

• Diameter

• Circumference

• Area

• Radius

The distance across a circle through the center is called what?

• Area

• Diameter

• Circumference

• Radius

If the radius of a circle is 4 inches, what is the diameter?

• 2 inches

• 2 feet

• 4 inches

• 8 inches

What is the Circumference of this circle? 

(Use 3.14 for  $\pi$  )

• 452.39 cm

• 452.16 cm

• 75.36 cm

• 75.40 cm

A bicycle tire has a diameter of 27 inches. What is the radius?

• 27pi
• 13.5
• 81
• 25pi