SOLUTION: in a trapezoid the sum of the base is 28 and the area is 84. what is the altitude of the trapezoid?

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Question 36668: in a trapezoid the sum of the base is 28 and the area is 84. what is the altitude of the trapezoid?
Answer by Evy(14) About Me  (Show Source):
You can put this solution on YOUR website!
Hello, I can help you lol.


First let me give you the formula
A= (b1+b2)/2 X h OR A= 1/2h (b1+b2)


i will use the second one ^^^
A= 1/2h (b1+b2)


now plug in the Numbers:
84=1/2h(28)


the next step is to multiply 28 by 1/2
28/2=14


You are left with:
84=14h


divide both sides of the equation by 14


you get:
84/14=6


So h=6


to check the problem simply plug in the numbers:
84=1/2(6) (28) multiply 6*28=168
84=1/2(168)
84=84


If you have any questions you can e-mail me at Southqueensb@yahoo.com
~EVY~