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## Measurement & Data - Statistics & Probability 176-188

### Course: Measurement & Data - Statistics & Probability 176-188>Unit 1

Lesson 1: Units of length

# Getting a sense of inches and feet

Sal describes the difference between inches and feet and helps to decide which unit of measure is best for measuring different objects. Created by Sal Khan.

## Want to join the conversation?

• What is a cm?
• A cm, or centimeter, is one-hundredth (1/100) of a meter.
So if you have 1 centimeter, you have 0.01 meters; and 100 centimeters equals 1 meter. When converting from centimeters to meters, you just move the decimal toward the left by two place values. And when converting from meters to centimeters, you multiply by 100.

Centimeters is a very small unit of measurement. In the previous video, Sal Khan says that a centimeter is only the width of a fingernail, while a meter is the length of a guitar.
• What is the U.S. system?
• The Imperial system, that has inches and feet.
• Why does 8feet look deep in the pool?
• the water can change how deep any body of water looks. Also for a pool 8ft is pretty deep.
• The inch, represented by the following symbol " (same symbol as quotation mark) is a unit of measurement of the Imperial system of measurement One inch is equal to 2.54 centimeters, a unit of measurement within the metric system. Both are small units of measurement. You need 12 inches to make up 1 foot, another unit of length in the Imperial system.

In the previous video, Sal Khan has mentioned that a centimeter is only the width of a fingernail.
Some things that make up one foot are the following:
2 Dollar bills
• Height of 175 US quarters stacked on top of each other
• Average length from wrist to elbow
.