S stands for Side
The bases are the parallel sides.
The height is the distance from the top to the bottom.
Perimeter=S1+S2+S3+S4
A=1/2 x (Base 1 + Base 2) x Height
S stands for Side
Perimeter=4xS
Area=SxS
L stands for length
W stands for width
Perimeter=(2xL)+(2xW)
B stands for Base
H stands for Height
A=BxH
L stands for length
W stands for width
Perimeter=(2xL)+(2xW)
A=LxW
S stands for side
Perimeter=4xS
r stands for radius
d stands for diameter
Area=Pi x r x r
The Circumference is the distance around the circle.
Circumference=2 x Pi x r or Circumference=Pi x d
