Question

a square has a side of a length of 3x

a) find an expression for the perimeter :

b)write an expression for the area of the expression:

Answer 1

Answer:

$expression \: for \: perimeter \: = 4(3x) = 12x$

$expression \: for \: area \: of \: square \: = side \times side = side^{2} = 3x \times 3x = 9x^{2}$