Question 323012
Use the Pythagorean Theorem  {{{a^2+b^2=c^2}}} 
a and b are legs and c is the hypotenuse.

{{{(80)^2+(150)^2=c^2}}}
{{{6400+22500=c^2}}}
{{{28900=c^2}}}
{{{sqrt(28900)=sqrt(c^2)}}}
{{{170=c}}}