Vocabulary
Name the collection of points equidistant from a point called the center
Circle
What is the circumference of a circle if:
the diameter = 14 yds?
43.96 yd
What is the circumference of a circle if:
the radius = 2 in (round to nearest tenth)
12.6 in
Trevor needs a new bicycle tire. His tire has a circumference of about 112 inches. What is the diameter of his tire? (round to the nearest tenth place)
35.7 in
Name the line segment that cuts a circle in half
Diameter
What is the circumference of a circle if:
the diameter = 18 yds?
56.52 yds
What is the circumference of a circle if:
the radius = 12 in (round to nearest tenth)
75.4 in
Gene’s frying pan is 14.5 inches in diameter. What is the circumference of his frying pan? (round to the nearest tenth place)
45.5 in
What do you call half of the diameter?
radius
What is the circumference of a circle if:
the diameter = 16.8 yds? (round to nearest tenth)
52.8 yds
What is the circumference of a circle if:
the radius = 7 in (round to nearest tenth)
44 in
Brad uses 31.4 meters of plastic edging to create the border of a circular flower garden in his yard. How far is it from the center of the garden to the edge?
5 m
The outside measurement of a circle (Hint: similar to perimeter)
Circumference
What is the circumference of a circle if:
the diameter = 14.8 yds? (round to nearest tenth)
46.5 yds
What is the circumference of a circle if:
the radius = 8.4 in (round to nearest tenth)
52.8 in
Macy measures a truck’s tire mark for one complete revolution as 120.48 inches long. What is the diameter of the tire? (round to the nearest tenth place)
38.4 in
The measurement of the inside of a circle
Area
What is the circumference of a circle if:
the diameter = 11.8 yds? (round to nearest tenth)
37.1 yds
What is the circumference of a circle if:
the radius = 11.7 in (round to nearest tenth)
73.5 in
The circular fountain in front of the courthouse has a radius of 9.4 feet. What is the circumference of the fountain? Round to the nearest tenth.
59 ft