Which of the following would result from multiplying each side of the polygon by a ratio of $\frac{1}{2}$?
![triangle](https://i.stack.imgur.com/7xvy7.png)

The final area is $24\text{ km}^2$

The final perimeter is $12\text{ km}$

The final area is $12\text{ km}^2$

The final perimeter is $24\text{ km}$

I'm confused is it 12^2 that i got from the area 1/2\*8\*6 or 12 km from the perimeter 6+8+10=24\*1/2?