Vocabulary
Name a shape that has no edges.
Circle
What is the circumference of a circle if:
the radius = 7 cm?
43.96 cm
What is the circumference of a circle if:
the Diameter = 4 cm
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)
35.66 cm
Name the line in a circle that cuts it in half.
Diameter
What is the circumference of a circle if:
the radius = 9 m?
56.5 m
What is the circumference of a circle if:
the Diameter = 10 m
31.4 m
Gene’s frying pan is 14.5 cm in diameter. What is the circumference of his frying pan? (round to the nearest tenth place)
45.5 cm
What do you call half of the Diameter?
Radius
What is the circumference of a circle if:
the radius = 8.4 m?
52.8 m
What is the circumference of a circle if:
the Diameter = 14 mm
44 mm
Brad is putting up a 10 m diameter circular flower garden in his yard. He will put plastic fencing along the flowerbed. How many metres of fencing will Brad need to enclose his flower garden? (round to the nearest tenth place)
31.4 m
The outside measurement of a circle. (Hint similar to Perimeter)
Circumference
What is the circumference of a circle if:
the radius = 7.4 mm?
46.5 mm
What is the circumference of a circle if:
the Diameter = 16.8 cm
52.8 cm
Macy measures a truck’s tire mark for one complete revolution as 120.48 m long. What is the diameter of the tire? (round to the nearest tenth place)
38.4 m
The measurement of the inside of a circle
Area
What is the circumference of a circle if:
the radius = 11.8 m?
74.1 m
What is the circumference of a circle if:
the Diameter = 23.4 cm
73.5 cm
The circular fountain in front of the courthouse has a radius of 9.4 m. What is the circumference of the fountain? Round to the nearest tenth.
59 m