Respuesta :
Answer:
15 I think.
Step-by-step explanation:
If the perimeter is 42 inches and the width is 6 inches. That is only one side so you multiply.6 by 2 to get 12. Then 42 minus 12 is 30. Finally you split 30 into 2, to get the length. Since there are to sides. So 15.
Perimeter equals width + length (P= W+L)
P=42
W=6
L=?
42=6+L
Subtract 6 from 42
42-6= 36
Length= 36
P=42
W=6
L=?
42=6+L
Subtract 6 from 42
42-6= 36
Length= 36