Final answer:
Conversion between different units of length is accomplished by using established equivalences, such as 1 foot equals 12 inches, and 1 yard corresponds to 3 feet. For metric conversions, 1 foot is roughly 30.48 centimeters.
Step-by-step explanation:
When dealing with measurement, it is essential to understand the relationship between different units. One fundamental unit in the customary system is the foot, abbreviated as 'ft'. For example, 3 ft helps us estimate a distance that might roughly be the length from your elbow to the end of your fingers once tripled. This unit is practical for measuring everyday objects like the height of a door or the length of a car.
To convert feet to inches, which are smaller customary units, you multiply the number of feet by 12 since there are 12 inches in a foot. Conversely, to convert inches to feet, you would divide by 12. If dealing with metric units, 1 foot is approximately equal to 30.48 centimeters, as you can multiply or divide by this number for conversions between feet and centimeters.
For larger distances, we can use the yard, which consists of 3 feet. If you have measurements in yards and need to know the equivalent feet, simply multiply by 3. To illustrate this, a garden length of 4 yards would be equivalent to 12 feet (4 x 3).