Question

If length of the side of the square is doubled, then area of square increases ______ times.

• A. 4
• B. 2
• C. 8
• D. 16

Answer 1

The correct option is A 4

Let the length of the square be $l$
Area of the square = Length x Length
= $l\times l$
= $l^2$ ...........(1)

Now, new length is $2l$.
$\therefore$ New area of the square = $2l\times 2l$
= $4l^2$ .........(2)

From (1) and (2), we get
area of the square increases 4 times.