SOLUTION: A triangle has an height of 14m and a base of 25m. What is the cost to make such a triangle out of 12 gauge sheet metal that cost $4 per m^2. please help I tried working it out

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Question 844092: A triangle has an height of 14m and a base of 25m. What is the cost to make such a triangle out of 12 gauge sheet metal that cost $4 per m^2.
please help I tried working it out but I can not arrive at the answer of $700. I already set up the problem A=1/2(25)(14)
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
The area, %281%2F2%29%2825%29%2814%29+%2Am%5E2.

The cost, %281%2F2%29%2825%29%2814%29+%2Am%5E2%2A+4%28dollars%2Fm%5E2%29;

The rest is just simplifying and computing the result. Do you need help on the simplifying?

"YES",
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%281%2F2%29%2825%29%2814%29+%2Am%5E2%2A+4%28dollars%2Fm%5E2%29, notice how the units are arranged! The square m will be canceled leaving just dollars.

The numbers:
%281%2F2%29%2825%29%2814%29%2A4
%2825%2A14%2A4%29%2F2
%2825%2A2%2A7%2A4%29%2F2
%2825%2Across%282%29%2A7%2A4%29%2Fcross%282%29
%2825%2A7%2A4%2F1%29=25%2A4%2A7
100%2A7
highlight%28700%29