Equivalent ratio

56:35=
32:56:72=
18:45:27=
60:45=
10:70=​

1. 8:5

2. 4:7:9

3. 4:3

4. 1:7

Step-by-step explanation:

1. they both are in 7 times table

2. both in 8 times table

3. 15 times table

4. 10 times table

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