[tex]\bf 35.6=\sqrt{15.3^2+x^2}\implies (35.6)^2=(\sqrt{15.3^2+x^2})^2 \\\\\\ 1267.36=15.3^2+x^2 \implies 1267.36=234.09+x^2 \\\\\\ 1267.36-234.09=x^2 \implies 1033.27=x^2 \\\\\\ \sqrt{1033.27}=x\implies 32.1445 \approx x[/tex]
