Respuesta :

Answer:

The dimensions are 15 x 6

Step-by-step explanation:

Length (L)       Width (W)

Perimeter = (W x 2) + (L x 2)

L = (W x 2) + 3

L x 2 = (W x 4) + 6

42 - 6 = 36

36 ÷ 6 = 6

6 x 2 + 3 = 15

Perimeter = (6 x 2) + (15 x 2) = 42