**Dimensional Analysis**

Unit factor method (dimensional analysis) used to convert a given result from one system of units to another.

**Examples:**

1. Consider a pin measuring 2.85 cm in length. What is its length in inches? ( Answer: 1.12 in)

2. A pencil is 7.00 in long. What is its length in centimetres?

(Answer: 17.8 cm)

3. You want to order a bicycle with a 25.5-in frame, but the sizes in the catalog are given only in centimetres. What size should you order? (Answer: 64.8 cm)