How to work out 2x = 0.8mm

Answer:
0.1
Step-by-step explanation:
2x*4 = 0.8
x = 0.1
Perimeter is the sum of all sides, thus 4 * 2x.
Answer:
o.4
Step-by-step explanation:
2x=0.8. Divide both sides by 2.
x=0.4