Question

What is the area. Of triangle with side of length 12cm 13cm and 5cm

Answer 1

Th area of the triangle is 30 cm² by Heron's Formula

Area =$\sqrt{s(s-a)(s-b)(s-c)}$
where s (semi perimeter) = (a+b+c)÷2

Answer 2

using heron's formula
12+13+5=30
30/2=15
15=s
12=a
13=b
5=c
area of triangle= under root s*(s-a)(s-b)(s-c)
= under root 15*3*2*10
=under root 900
=30