Answer:
17.32 inches
Step-by-step explanation:
Perimeter of a shape is equal to the total distance around it.
Here we are given the lengths for its 3 sides, so we can simply add them all together to get the perimeter in cm:
12+14+18 = 44cm
Now we just need to convert 44cm into inches. 1 inch = 2.54cm
Therefore 44/2.54 = 17.32 inches
Hope this helps!