Question 383546
You can find the length of the other side using the Pythagorean theorem.
{{{L^2+W^2=D^2}}}
{{{8^2+W^2=15^2}}}
{{{64+W^2=225}}}
{{{W^2=161}}}
{{{W=sqrt(161)}}}
The perimeter is then,
{{{P=2*(L+W)}}}
{{{highlight(P=2*(8+sqrt(161)))}}}cm