Question

find the area of triangle are AB = 3cm, BC = 6cm and AC = 4cm​

Answer 1

$a = \frac{1}{2} \times b \times h$

$\frac{1}{2} \times 3 \times 4 = 6$

Answer 2

Answer:

AB=c=3cm

BC=a=6cm

AC=b=4cm

Semiperimeter = S = (a+b+c) /2 = (3+4+6)/2 = (13/2)

Area of triangle = √s(s-a)(s-b)(s-c)

area = √(13/2)((13/2)-6)((13/2)-4)((13/2)-3)

area = √(13/2)(1/2)(5/2)(7/2) = √(13*5*7)/2^4 = √455/2^4

area = (1/4)*√455 = 5.33

Hope this helps you...