The length of the BC segment is 4 times less than the length of the AB segment. Find the length of these segments if AC = 27cm.

1. By the condition of the problem, it is known that the segment BC is 4 times less than the length AB, AC is 27 cm.

2. Let’s take the length of the BC as 1 part, then AB is 4 times longer, which means it is 4 parts.

Let’s count how many parts the AC segment is divided into.

1h + 4h = 5h

3. Determine how many cm are in 1 part.

27 cm: 5 = 5.4 cm.

So the segment BC = 5.4 cm.

4. Find what the segment AB is equal to.

5.4 cm * 4 = 21.6 cm.

Answer: BC length = 5.4 cm, AB = 21.6 cm.