The altitude corresponding to side $a$ is $h_a = \frac2Aa = \frac16813 \approx 12.92$, for $b$ it is $h_b = \frac16814 = 12$, and for $c$ it is $h_c = \frac16815 = 11.2$. The shortest altitude corresponds to the longest side, which is $15$, yielding: - Abu Waleed Tea