Parts of a circle
What is the line that goes from the center to the outer point of a circle?
Radius
If the radius of a circle is 4, what is the diameter?
8
If the diameter of a circle is 4 what is the radius?
2
What is circumference?
the perimeter or border of the circle
What is the area of a circle?
the space inside of the circle
What is the line that goes through the center of a circle and connects two points on the edge?
Diameter
If the radius of the circle is 10, what is the diameter?
20
If the diameter of a circle is 6 what is the radius?
3
What is the formula for circumference?
Pi x Diameter
2 x Pi x Radius
What is the formula for finding the area of a circle?
Pi x R squared
What is the name of the border or perimeter of the circle?
Circumference
If the radius of the circle is 15, what is the diameter?
30
If the diameter of a circle is 10 what is the radius?
5
What is the space inside of a circle called?
The area
If the radius of the circle is 20, what is the diameter?
40
If the diameter of a circle is 16 what is the radius?
8
What is the name of the symbol we use to solve for area and circumference? Hint: 3.14
Pi
If the radius of a circle is 50, what is the diameter?
100
If the diameter of a circle is 20 what is the radius?
10