Question

Find the mean perimeters of two squares having sides x units and y units.

Answer 1

Side of square 1 = x
Perimeter 1 = 4x
Side of square 2 = y
Perimeter 2 = 4y
Mean =
$\frac{4x + 4y}{2} \\ = \frac{4(x + y)}{2} \\ = 2(x + y) \\ = 2x + 2y$