The length of the diagonal of a square is ‘a’ cm. Which

Home » Aptitude » Mensuration » Question

The length of the diagonal of a square is ‘a’ cm. Which of the following represents the area of the square (in sq. cm.) ?

1. 2a
2. a/√2
3. a²/2
4. a²/4

Correct Option: C

Using Rule 10,

Side of square =	Diagonal	=	a
	√2		√2

∴ Area = (Side)²

=		a		²	aq.cm. =	a²	sq.cm.
		√2				2