-5 + -40 + -50 = -5 + 8 + 10
-95 = -13
It's obviously none of the above because the true area will have a square root of 3 in it because of the equilateral triangle. They want us to find the approximate area. When I was in school the difference between an approximation and the exact answer was greatly stressed but that seems to be fading of late.
That's a rectangle less an equilateral triangle. The area of an equilateral triangle is
which is easily derived but I won't bother here.

Answer: b
Answer:
sorry i can't see it properly I am very sorry
ppppp)is dilated from the origin by scale factor r to the world
Here is what the graph looks like