Answer:
Step-by-step explanation:
Perimeter of triangle = 4x - 3 + x + 9 + 8
= 4x + x - 3 + 9 + 8
= 5x + 14
Area = [tex]\frac{1}{2}*base *height[/tex]
[tex]= \dfrac{1}{2}*8*3x\\\\= 4 * 3x\\\\= 12x[/tex]
