# In broken ABCD, the length of the AB link is exactly 12dm, which is 2 times the length of the BC link, the length

In broken ABCD, the length of the AB link is exactly 12dm, which is 2 times the length of the BC link, the length of the CD link is exactly 18dm. Find the length of the broken ABCD.

Broken ABCD consists of three segments (three links). These are segments AB, BC and CD.

The total length of the polygonal line is equal to the sum of the lengths of these three segments.

LABCD = AB + BC + CD, where LABCD is the length of the broken ABCD.

So, to find the length of a polygonal line, you need to find out the lengths of all the segments that make it up.

Let’s find the length of the BC, and then the broken one.

1) 12 * 2 = 24 (dm) length of the BC segment.

2) 12 + 24 + 18 = 12 + 18 + 24 = 30 + 24 = 54 (dm) length of the broken ABCD.

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