So remember that the perimeter is the sum of all the sides, and a rectangle is a quadrilateral, or four-sided polygon. Since we know that 2 of the sides is 91 yds and the perimeter is 338 yds, we can solve for the width. Our equation will look like this (let w = width): [tex] 2(91)+2(w)=338 [/tex]
Firstly, do the multiplications: [tex] 182+2w=338 [/tex]
Next, subtract 182 on both sides: [tex] 2w=156 [/tex]
Next, divide both sides by 2, and your answer will be w = 78 yds.
