Cost of a triangular plot with sides 55, 62, 117

A seller offers you a triangular plot whose sides measure $55$, $62$ and $117$ yards, priced at $10 per square yard. How much does the plot cost?

$0. Since $55+62=117$, the triangle inequality fails with equality: the three sides lie on one straight line and enclose no area, so there is nothing to pay for.