Question

Find the area of a triangle whose sides are 7cm, 18cm and 14cm.
4​

Answer 1

A=1

4﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=1

4·﹣74+2·(7·18)2+2·(7·14)2﹣184+2·(18·14)2﹣144≈44.84348cm²