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Question 102018: Substitute the given values into the formula and solve for the unknown variable.
15) A = 1/2bh; b = 19, h = 3
Answer by JP(22)   (Show Source):
You can put this solution on YOUR website! This is the area formula for a triangle. First you must plug in your numbers for b and h respectively.
So, you have, A=1/2(19)*(3).
You then multiply 19 by 1/2 to get 19/2.
Because, 19/1*1/2=19/2.
So now you have A=(19/2)*(3).
Multiply 19/2 by 3, 19/2*3/1, that equals 57/2.
So now you have A=57/2.
Then divide 57/2 and you get 28.5.
A=28.5 is your solution.
To check your work plug in 28.5 into variable A.
28.5=1/2(19)(3)
28.5=(19/2)(3)
28.5=57/2
28.5=28.5 thus proving the solution is valid
Hope this helps.
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