The length of a rectangle is 12 feet. the width of the rectangle is (1)/(2) the length. what is the perimeter of the rectangle in feet? 18
24
30
36
72

36 feet

Step-by-step explanation:

width is 12/2 or 6

12(2) + 6(2) = 36

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