7 because 42 divided by 6= 7 and length times width = perimeter
Answer:
x = 4.5
Step-by-step explanation:
there's definitely other ways to solve this, but I used a proportion.

Then you can make this equation:
14x = 3.5 * 18
I solved for it and got 4.5 .
<span>x = 5 i beliavie :)..............................</span>
Answer:
A. 20cm hope this helps
Step-by-step explanation: