Given a square with the area of 16in2. Find the length of each side of the square.
The picture below shows the square with sides of length L.
Since the value of the area is given as 16in2, we can substitute A with 16 as shown below:
Now, we have L2 = 16. Since L square is a multiplication of L twice, we can find L by taking the square root of 16. This is shown below:
Now, the calculated number 4, has no meaning until we include the unit for it. Since the area is in in2, L will be in inch. Hence:
Therefore, the answer is B.
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