Alot of in the shape of a trapezoid has an area of 6550 square centimeters it's longer base measures 150 centimeters and the shorter base is 85 centimeters what is the height

So the formula for the area of a trapezium is
area = (a + b)/2 * h
*a is the short side
* b is the long side
*h is the height
so let's plug in the values we already know: area, long base, short base. Here's how the formula looks now...
6550 = (150 + 85)/2 * h
*so, we need to find 'h'
use algebra to find it.
6550 = (235/2) * h
6550 = 117.5 * h
6550/117.5 = h
h = 55.74 (approx)

Letter a (: : : : : : : : : :

The amount used= 13.04- 1.9 = 11.14