3 Answers

Easy way.  Just measure length + width, multiply those two numbers for squeare feet.. simple!

To square a number means to multiply it by itself. For example, the square of 4 is 16. We could say that four squared is 16. We could also write that as 4² = 16.

The little 2 is called an exponent. It doesn't mean to multiply 4 times 2,  It means to multiply 4 times itself, in this case, giving us 16.

A few more examples are 4² = 16, 9² = 81, and 53² = 2809. Notice how quickly the results of squaring become very large.

We refer to numbers like 16 and 81 as perfect squares, simply because they are the result of having squared a number

Reverse the process to finf the root.

I like the square root of 69, since it come out as eight something  ;)

HI   TO FIND THE SQ ROOT OF A NUMBER  IS THE OPPOSITE OF THE SQ OF A NUMBER  IE:

100  THE SQ ROOT IS 10        THE SQ ROOT OF A NUMBER  IS A NUMBER WHICH MULTIPLYED BY ITSELF GIVES YOU THE ORIGINAL NUMBER

EXAMPLES        9  SQ ROOT   = 3  AS   3 X 3 = 9      49 SQ ROOT =  7    AS  7 X 7 =49

THESE ARE EASY EXAMPLES  FOR MORE COMPLICATED  NO'S  YOU WILL NEED A CALCULATOR OR MATHS TABLES BOOK  

HOPE THIS HELPS

MONDEOMAN