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 diameter = 4 cm (round to 1 d.p.)
12.6 cm
Trevor needs a new bicycle tire. His tire has a circumference of about 112 cm. What is the diameter of his tire? (round to the nearest tenth place)
35.7 cm
What is the area of a circle with radius 7 meters?
153.94 meters2
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 cm (round to 1 d.p.)
75.4 in
Gene’s frying pan is 14.5 cm in diameter. What is the circumference of his frying pan? (round to 1 d.p.)
45.5 cm
What is the area of a circle with radius 4 meters?
50.3 meters2
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 m (round to 2 significant figures)
44 m
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
What is the area of a circle with diameter 10 inches?
78.5 inches2
What is the distance around a circle called?
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 3 significant figures)
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 1 d.p.)
38.4 in
What is the area of a circle with diameter 30 feet?
706.86 feet2
What is the measure of all of the inside of a circle called?
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
What is the area of a circle for which 2 times the diameter is 48 meters
452.39 meters2