Help with area measurements exponent

[NewAge500]

My question is regarding math measurments LxW and LxWxH?

Why when we write for example LxW we add an exponent 2 and for LxWxH we would add 3, im confused as to what the purpose of it is and what do they represent, i know what an exponent is just not how its used in measurments.*
If we have a lenght thats 2 and a width thats 2 we would get 4 but we would write it as 4^2 and if we use LxWxH we would add ^3.
I remember just using the formula LxWxH to get the answer and thats it, i dont remember no exponent, as for where i seen it, it was on khan acedemy.

Thanks for your help!

 

[mmm4444bot]

It's the units which are squared or cubed, not the measurement itself.

Area = L × W

The units for measuring area are square units. It's common to use an exponent, to show square units, as opposed to writing "square units".

EGs:

L = 2 feet and W = 3 feet

Area = 2 × 3 = 6 square feet or 6 feet^2


L = 10 cm and W = 20 cm

Area = 10 × 20 = 200 square cm or 200 cm^2


If units are not given, then we simply use the word "units", to represent the unknown units.

L = 5 and W = 7

Area = 5 × 7 = 35 square units or 35 units^2


It's the same situation for volume, except that volume has three dimensions, so the units of measurement are cubes instead of squares (i.e., "cubic units" or units^3).

EG:

L = 3 inches
W = 2 inches
H = 11 inches

Volume = 3 × 2 × 11 = 66 cubic inches or 66 inches^3 :cool:

 

[NewAge500]

Ah now I get it! Thank You!