Find the distance between each pair of points. 1. (-4, 6) and (3, -7). 2. (-6, -5) and (2, 0).3. (-1, 4) and (1, -1).4. (0, -8) and (3, 2).

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2