Width (w)
6
units
Height (h)
4
units
Area (inside)
24
sq units
Perimeter (around)
20
units
Area = w × h =
6
×
4
=
24
square units
Perimeter = 2 × (w + h) = 2 × (
6
+
4
) =
20
units
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Area
is the space
inside
(measured in square units).
Perimeter
is the distance all the way
around
the edge (measured in plain units). They are different things and grow differently!