The area of the right triangle =

b = base = SV = 12.3
h = hight = HL = 24.6
A = area

Answer:
D.
Step-by-step explanation:
it should be the sales tax because you pay a little bit more.
The answer is not correct
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20 high x 18 long = 360 square feet
3 windows x (4 high x 3 long) = 3 windows x 12 square feet = 36 square feet
360 - 36 (because we obviously don't paint windows) = 324
324 square feet to paint on one wall