Section Two

The focus of section two will be on converting U.S. Standard measurements to metric units.
Section two will also review specific aspects of the metric system for Water-Based System Inspectors.
The following units will be covered in section two: liter, cubic decimeter, Pascal, meter, millimeter, bar and others.

Page 10 – Conversion

To convert U.S. Standard units to metric units, you will need a formula for each conversion.

For example:

We will assume that both amounts are U.S. dollars.

Your friend in England buys 6 liters of gas for $12.00. You pay $6.00 for 2 gallons. Who is buying the cheaper gas?

To figure this out we need to know how many liters are equal to a gallon. You look the answer up in the encyclopedia or an almanac. Your formula is: 1 gallon=3.785 liters.

Now let’s apply what you know:

First find out how many dollars you are paying per unit:

$2.00 per liter; $3.00 per gallon;

A gallon equals 3.785 liters. Now multiply the 2 numbers to turn it into liters.

1 x 3.785= 3.785 liters.

Now take this number and divide it by how many dollars you are paying.

$3/3.785= $0.79

Compare your $0.79 per liter to your friends $2 per liter.

Solution:
Your gas is cheaper.

Liters

A liter is another name for a cubic decimeter (1L = 1dm3). In other words a liter is 0.001m3.

The formula for converting liters to gallons is:
Liters x 0.26417

For example:
You have 12 liters of tea and a 3-gallon container to fill. You want to fill the container completely. Do you have enough tea to fill the container?

Use the above formula:
12 liters x 0.26417
= 3.17004 gallons

Conclusion: You have more tea than the container will hold.
How many liters of tea would you need to fill 3 gallons exactly?
Use the formula from the previous page:
3 gallons x 3.785
= 11.355 liters required to fill the container