If you are calculating the area of a rectangle, it is length times width. You are not multiplying all the sides, because there are four sides. You only need to multiply two of them.
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you find the perimeter and then you times all the sides together
no add the sides of the area
If the sides of a triangle are doubled then the area becomes quadrupled (four times as large).
A = L2 if you double the sides, the area will be 4 times larger than the original one.
In order to find the area of a square, you must do the following:-Make sure that all of the sides are equal.-Lets just say one side equals X, therefore all of the sides are equal to X.-So, You take X times X to find the area, or X2.