Question 304220
50 is higher then 40 so 50=c and 40=b
{{{a^2+b^2=c^2}}}
{{{a^2+40^2=50^2}}}
{{{a^2+1600=2500}}}
{{{a^2=2500-1600}}}
{{{a^2=900}}}
{{{sqrt(a^2)=sqrt(900)}}}
{{{a=30}}}