Question

Find the length of the side of a square whose area is \(441 \;m^2\)

Answer 1

Let the length of the side of the square be \(x\) \(m\).
Area of square = \((x)^2\)
= \(441 \;m^2\)
\(x = \sqrt{441}\)
The square root of \(441\) can be calculated as follows.

	21
2	\(\bar 4\)\(\bar 4\bar 1\) -4
41	041 41
	0

∴ \(x = 21 \;m\)

Hence, the length of the side of the square is \(21 \) \(m\).