Question 102018
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.