Question

In triangle abc,bc=13cm,ca=14 cm and ab=15 cm. Find the area of triangle and its altitude corresponding to side ac

Answer 1

semi-perimeter = 15+14+13/2 = 21

Heron's formula = under root of

21(21-15)(21-14)(21-13) = 21(6)(7)(8)

under root of = 7056

= 84m2
$\sqrt{} s (s - a)(s - b)(s - c)$
heron's formula