Question 185794
The perimeter of a square is the sum of lengths of the fours sides. Each side of a square has the same length.
You are told one side is {{{3x/4+1}}}. So the perimeter is 4 times that
{{{Perimeter = 4 *  ((3x/4)+1)}}}
{{{Perimeter = 3x + 4}}}


2)The perimeter of a rectangle is the sum of lengths of the fours sides. Every rectangle has two sets of equal length sides.
You are told the length of one side is 18.
{{{Perimeter = 2*Length + 2*Width}}}
{{{50 = 2*18 + 2*Width}}}
{{{50 = 36 + 2*Width}}}
{{{14 = 2*Width}}}
{{{7 = Width}}}