Radius, Diameter, or Circumference
Area
Circumference
100
The distance around the circle.
What is circumference?
100
Find the area of the circle. Use 3.14 for pi.
What is 50.24 units squared?
100
Calculate the diameter of a circle with a circumference of 36 feet.
Use 3.14 for pi.
Round your answer to the nearest hundredth.
What is 11.46 feet?
200
Swimming across a circular pool.
What is diameter?
200
Find the area of the circle. Use 3.14 for pi.
What is 19.625 units squared?
200
A circular flower garden has a diameter of 14 feet. About how much fencing is needed to go around the garden?
Your answer should be close to 43.96
300
Cutting a donut in half.
What is radius?
300
A circular railroad-crossing sign has a diameter of 30 inches. What is the area of the sign in square inches? Use 3.14 for pi. Round your answer to the nearest whole square inch.
707 sq in
300
The circumference of a circle is C inches. The diameter of the circle is 19 inches. Write a ratio that best represents the value of pi
400
The crust of a pie.
What is circumference?
400
Jennifer painted a tabletop that is shaped like a circle. The circumference of the tabletop is 6 pi feet. Which measurement is closest to the area of the tabletop in square feet?
The area of the circular tabletop is ___ pi sq ft
9 sq ft
400
Which of the following statements is NOT true?
A. Pi is the ratio of the circumference of a circle to its radius.
B. Pi times the diameter equals the circumference
C. The circumference is the distance around a circle
D. The diameter is half the radius
E. The area of a circle is the distance around a circle.
F. Pi is the ratio of the circumference of a circle to its diameter
What is answer choice A.
500
The edge of a paper plate after folding it into fourths.
What is radius?
500
A figure is composed of a triangle & a semicircle. What is the area of the shaded region?
Let pi = 3.14
276.48 sq cm
500
A circular fountain has a circumference of approximately 62.8 feet. Find the diameter, d, of the fountain in feet.
d = 20 ft