Question

Write an expression that represents the area of a square that has a side length of 3 x + 1 2 units.

Answer 1

The expression that represents the area of the square is 9x^2 + 72x + 144

What is area?

The area of any shape is the amount of space on that shape.

The side length (l) of the square is given as:

$l =3x + 12$

The area of a square that has a side length, l is:

$A = l^2$

So, we have:

$A =(3x + 12)^2$

Expand

$A =9x^2 + 72x + 144$

Hence, the expression that represents the area of the square is 9x^2 + 72x + 144

Read more about areas at:

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