Question

WILL MARK BRAINLIEST!!! PLEASE HELP

Answer 1

I did that before i remember it was 12. hope that helped

Answer 2

Answer:

Step-by-step explanation:

$Distance=\sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2}}\\\\AB=\sqrt{(4-1)^{2}+(6-2)^{2}}=\sqrt{(3)^{2}+(4)^{2}} =\sqrt{9+16}=\sqrt{25}=5\\\\AC=\sqrt{(4-1)^{2}+(2-2)^{2}}=\sqrt{(3)^{2}}=3\\\\BC=\sqrt{(4-4)^{2}+(6-2)^{2}}=\sqrt{(4)^{2}}=4$

Perimeter = AB + AC + BC = 5 + 3 + 4 = 12