Terms
The distance around the edge of a circle
What is the formula to find the radius of a circle?
r = d/2
What is the formula to find the diameter of a circle?
d = 2r
The diameter of a circle is 17 units. Find the circumference of the circle.
53.38 units
42
16
What is the numerical value of pi?
3.14
The diameter of a circle is 5cm. What is the radius?
r = 2.5cm
The radius of a circle in 21 in. What is the diameter?
d = 42 in
The radius of a circle is 8m. What is the circumference?
50.24m
72
What part of a circle is the distance from one point to another point on the circle, and crosses through the center?
Diameter
The diameter of a circle is 23mm. What is the radius?
r = 11.5mm
The radius of a circle is 12 mm. What is the diameter?
d = 24 mm
69.08 units
152
225
What part of a circle is a straight line extending from the center to the circumference?
Radius
The diameter of a circle is 245ft. What is the radius?
r = 122.5ft
The radius of a circle is 73in. What is the diameter of the circle?
d = 146in
The diameter of a circle is 14 in. What is the circumference?
43.96 in
232
529
What are the formulas used to find the circumference of a circle?
C = 2π4
C = πd
C = 109.9 ft
What is the radius?
r = 17.5 ft
C = 301.44 in
Find the diameter of the circle
d = 96 in
The radius of a circle is 357cm. What is the circumference?
2,241.96cm
362
1,296