\( 27^{2}+x^{2}=54^{2} \)
\(x=\sqrt{2187}=3\sqrt{243}\)
Step 1 :\(x^{2}=54^{2}-27^{2}\)
Step 2 :\(x^{2}=2916-729\)
Step 3 :\(x^{2}=2187\)
Step 4 :\(x=\sqrt{2187}=3\sqrt{243}\)