Solution
Given a trapezoid with the following dimensions
[tex]10ft,10ft,11ft,15ft[/tex]To find the perimeter, P, of the polygon, we add up all the side lengths i.e the formula to find the perimeter, P, of the trapezoid is
[tex]\begin{gathered} P=a+b+c+d \\ \text{Where a, b, c and d are the side lengths} \end{gathered}[/tex]Where
[tex]\begin{gathered} a=10ft \\ b=10ft \\ c=11ft \\ d=15ft \end{gathered}[/tex]Subsitute the values into the formula above
[tex]\begin{gathered} P=10+10+11+15=46 \\ P=46ft \end{gathered}[/tex]Hence, the perimeter is 46ft