Question

If each side of a square of side $a$, is doubled, the new area is:

• A. $a^2$
• B. $a^4$
• C. $4a^2$
• D. $4a^4$

Answer 1

The correct option is C $4a^2$

Given:
Side of square= $a$

For new square, side is doubled. Hence, new side length is $2a$
Area of the new square is given by the square of its side.
Hence, area of new square is:
${\left(2a\right)}^2=4a^2$