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Perimeter and Area
Perimeter:
Formula:
- The perimeter is the sum of all the side lengths of a polygon
- MUST add all sides together and make sure you convert them all to the same units
Example: What is the perimeter of this square?
*all sides of a square have equal length
12in + 12in + 12in + 12in = 48in
12 in
Area:
o Multiply side lengths together to determine how much space is enclosed within shape
o ALWAYS is in squared units (ex- in^2, sqft)
Formulas:
***L represents length, W represents width, H represents height, B represents base***
- Quadrilaterals- A = L x W
- Circles- A = πr^2
- Triangles- A = (1/2) x B x H
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