I think its 1.012(500 - 100) = 400* 1.012 = 404.80 dollars
Angles 6 and 7, because they are alternate along the transversal.
Also angles 1 and 4.
Answer:
12.5 pi or 39.26990
Step-by-step explanation:
First we can find the radius, which is half the diameter, 5 feet. To find the area of a semi-circle we would find the area of the circle and then divide by 2:

We can substitute what we have:

This gives us:
12.5 pi or 39.26990(Not sure what format you need it in)
The answer is B.
Hope that helps, if you need any more help, just ask : )