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S -1/2 = 1/2
Add 1/2 to both sides so
S - 1/2 + 1/2 = 1/2 + 1/2
Simplify it:
S = 1
So <em><u>S = 1</u></em>
To find the perimeter, you add up all of the sides and lengths. To find the area, multiply the length by the width.
I hope this helps you
width =w
length = w+20
length =36
w+20=36
w=16 width
