I have an answer its 50 Hope This Helps!!! :)
We know the area of the middle rectangle is 48 (length * width). removing that rectangle leaves us with two semicircles. you can combine those semicircles to be the equivalent of one circle. the area for a circle is r^2 * pi. we know the diameter is 4 because that is where we cut the semicircles. radius is half the diameter, so r is 2. 2^2 is 4, 4* pi is 12.56. add 12.56 (area of semicircles) with 48 (area of rectangle) and we get 60.56
The answer is 0 because the formula to finding a slope from two different points are y1-y2/x1-x2 (meaning as a fraction) in this case, the answer is 0/5, which is equivalent to 0