Measures and Notation

Temperature:

 Fahrenheit- Water boils (under standard conditions) at 212⁰ and Freezes at 32^0.

Celsius or Centigrade- Water boils at 100⁰ and freezes at 0⁰ 

Kelvin- Water boil at 373.15k and freezes at 273.15k.

To convert centigrade into Fahrenheit: 

Multiply by 9, divide by 5, and add32.

To convert Fahrenheit into centigrade:

Subtract 32, multiply by 5, and divide by 9.

Square Measure:

(In unit for cordwood etc.)

1 Square inch                  =        6.452 square centimeters

144 Square inches           =        1 square foot

=        929.03 square cms.

=        9.29 square decimeter

9 square feet                   =        1 square yard

=        0.8361 square meter

301/4 square yards           =        1 square rod

 (or sq. pole or sq. perch)

                                      =25.292 square meter

1acre                               =        1 square mile

                                      =        259.00 hectares

                                      =        2.590 sq. kms

Cubic measure

1 cubic inch                    =        16.387 cubic cms

1.728 cubic inches           =        1cubic foot            =        0.0283 cubic metre

27 cubic feet                             =        1cubic yard            =        0.7646 cubic metre

The Metric System

Libear Measure