Answer:
height = 12 cm
Step-by-step explanation:
The area (A) of a trapezoid is calculated as
A = [tex]\frac{1}{2}[/tex] h(a + b)
where h is the height and a, b the parallel bases.
Here A = 120, a = 6 and b = 14 , thus
[tex]\frac{1}{2}[/tex] h (6 + 14) = 120
[tex]\frac{1}{2}[/tex] h × 20 = 120
10h = 120 ( divide both sides by 10 )
h = 12 cm
