Question

One of the base for a trapezoid is 5in the other is unknown the height is 3in the area is 18in what is the other base.

Answer 1

7 inches

Explanation:

formula for a trepezoid is 1/2(a+b)*h

1/2(5+x)X3=18 (now make x the subject)

(5+x)X3=36

5+x=12

x=7

so the other base is 7in