Circles
4
How do find the Diameter with only the radius is given?
multiply the radius by 2
How do find the circumference if only the radius is given?
multiply the radius by 2 and 3.14
r x 2 x 3.14
You get a free 100 points
yay
If the diameter is 30, then the radius is
15
What is the Diameter of a circle with the circumference of 7
d= 2.22929936
How do find the circumference of a circle when you only have the diameter?
d x 3.14= C
What is the diameter and radius of a circle with the circumference of 189?
diameter=60.2
raduis= 30.1
What do you get when you divide the circumference of a pumpkin by its diameter?
Pumpkin Pi
True or False: The diameter is 1/2 of the radius
True!
What is the diameter of a circle with a radius of 7.999?
D=15.998
What is the circumference of a circle with a radius of 0.68?
4.3
Erin has a math problem, she is drawing 6 circles for the base of her snowmen, but the snowmen's base has to have the circumference of 10. What should her diameter be?
d=3.2
What is the circumference of a circle with the radius of 10 inches. Use 3.14 for Pi.
62.8 inches
What is the Diameter or a circle if the radius is 12345? No calculators
24690
If the diameter of a circle is 5 what is the circumference?
15.7
The circumference is 67 the diameter 30. True or False.
False
c=678 what is the radius
108
What is the Diameter of a circle that has the circumference of 123456789? Round to the nearest thousandth.
D= 39,317,448.7
The circumference of a circle is 29 and the radius is 7. True or False
False
List the 4 formulas you need for circles
(Circumference, Area, Pi, Diameter/Radius)
A=(pi)r2
(pi)=C/d
d=2r