Answer :
Answer:
The height is 4in
Step-by-step explanation:
[tex]A=\frac{a+b}{2}*h \\40=\frac{9+11}{2} *h\\40=\frac{20}{2} *h\\40=10*h\\4=h[/tex]
40 = A
9 = a
11 = b
so if you substitute the variables in the equation for the numbers in the question, and then simplify, you will get the answer.
I hope this helps :)
Answer:
The height is 4 inches.
Step-by-step explanation:
The formula for determining the area of a trapezoid is expressed as
Area = 1/2(a + b)h
Where
a and b are the length of The bases are the 2 sides of the trapezoid which are parallel with one another.
h represents the height of the trapezoid.
From the information given,
a = 9 inches
b = 11 inches
If It has an area of 40 inches² , then
40 = 1/2(9 + 11)h
Cross multiplying by 2, it becomes
40 × 2 = (9 + 11)h
80 = 20h
h = 80/20 = 4 inches