There are 15 more boys in cdc in girls. there are 27 girls. how many students are in cdc?

69 total  15 more boys Which means there are 27 boys and girls plus the Xtra 15 boys which is 27+27+15 which equals 69.

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