- The bases are circles
- Radius is half a diameter
- Diameter cuts a circle in half
- Circumference is the perimeter of a circle
- Pi is the ratio between circumference/diameter or 3.14
Formulas:
Circumference - pi (d) = c
Radius - d/2 = r
Diameter - 2r = d or c/pi
Area of a circle:
pi (r²) or pi (r) (r)
Net of a cylinder:
Formula:
lxw = a
pi (r) (r) = a
d = 2r
r = d/2
c = pi(d)
Here are the answers on our homework.
*I'm only showing one of each (diameter, circumference, radius) because Mr. Harbeck told me to.*
Here is a link on cylinders.
A video to help you learn the surface area of a cylinder:
Cylinder Volume and Volume Problems
7.3
7.4
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