A = \sqrts(s - a)(s - b)(s - c) = \sqrt21(21 - 13)(21 - 14)(21 - 15) = \sqrt21 \cdot 8 \cdot 7 \cdot 6 = \sqrt7056 = 84 - AMAZONAWS

📅 March 11, 2026 👤 scraface

Mar 11, 2026

$A = \sqrt{s(s - a)(s - b)(s - c)} = \sqrt{21(21 - 13)(21 - 14)(21 - 15)} = \sqrt{21 \cdot 8 \cdot 7 \cdot 6} = \sqrt{7056} = 84$