Notes and Formulas for Rectangle Calculations:
If you know any 2 values for the rectangle (length, width, area or perimeter) you can calculate the other 2 rectangle unknowns. A square calculation is a special case of the rectangle where the length is equal to the width.
Formulas and Calculations for a rectangle:
Given the length and width find the area and perimeter
- l and w are known; find a and p
- a = l * w
- p = 2l + 2w
Given the area and length find the width and perimeter
- a and l are known; find w and p
- w = a/l
- p = 2l + 2w
Given the perimeter and length find the width and area
- p and l are known; find w and a
- w = p/2 - l
- a = l * w
|
l = length
w = width
a = area
p = perimeter |
