Question

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

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

Answer 1

The correct option is C 4$a^2$

Length of a side of a square = $a$ units
We know that, the area of a square = $(side{)}^2$.
Area = $a\times a$ = $a^2$.

Length of the side of a square is doubled.
New length = $2a$.
Area of the new square = $2a\times 2a=4a^2$.