Semi Circle and Circle Circumference

What is the perimeter of the semi-circle?

• 11 yd

• 17.27 yd

• 34.54 yd

• 28.27 yd

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

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

What is the perimeter of the semi-circle?

• 11 yd

• 17.27 yd

• 34.54 yd

• 28.27 yd

What is the distance around a circle?

• Circumference

• Area

• Diameter

• Radius

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

True or False: The radius goes half way across the circle

• False

• True

If you fold a circle in half, what shape have you created?

• Quarter circle

• Semi-circle

• a taco

• another circle

Which expression could be used to find the approximate circumference of the quilt piece?

• 2(pi)16

• 2(pi)8

• 2(8)

• 2(4)