Help need help for quiz:(

812ft^{2}

Step-by-step explanation:

for a rectangle its base time height so, 18(28)= 504

for the triangle its the same as a rectangle b(h) now we cut it in half  see they give us the total height for the whole thing (40)

so we subtract 40-18 to find the hieght of the triangle, 22.

So now we plug it in, (28)(22)/2= 308, now we add the area of both of the figures. 504+308=

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

step-by-step explanation: