Answer:
72
so the second one
Step-by-step explanation:
Triangles area= Base x Height ÷ 2
12x12= 144
144÷ 2 = 72
41
You have to use Pitagoras.
a^2 + b^2 = c^2
12^2 + 12^2 = c^2
144 + 144 = c^2
288 = c^2
c = √288 = 16.9
P triangle = 16.9 + 12 + 12 = 40.9
Rounded is 41
