Question

what will happens to the area of a square , if its side is tripled ?

Answer 1

it will be 9times greater than original one you know

Answer 2

area of a square = side × side
= a×a

if the side is tripled then the side=3a
new area = side × side =
$3a \times 3a =9a {}^{2}$
therefore, the area will be increased by ×9