The area,
a
aa, of a trapezoid is calculated using the formula
a
=
1
2
(
b
+
c
)
h
a=
2
1

(b+c)ha, equals, start fraction, 1, divided by, 2, end fraction, left parenthesis, b, plus, c, right parenthesis, h, where
h
hh is the height of the trapezoid and
b
bb and
c
cc are the bases of the trapezoid.