Respuesta :

Answer:

4

Step-by-step explanation:

6+8=14 and so the other side would be 4 because when you add them all together its 18

Answer:

It is 4cm

Step-by-step explanation:

If the perimeter is 18, and with the two sides given (8 and 6) you would do 8+6 to get 14 then find the difference between 14 and 18, and that is 4.