Answer:
[tex]Area = 5x^{2} + 20x\\Perimiter = 12x +8[/tex]
Step-by-step explanation:
Area = (length)(width)
Area = (5x)(x + 4)
[tex]Area = 5x^{2} + 20x[/tex]
Perimiter = 2(length) + 2(width)
Perimiter = 2(5x) + 2(x + 4)
Perimiter = 10x + 2x + 8
Perimiter = 12x + 8
