Given a square where the length of each side is 5cm. Find the area of this square.
The picture below shows the square:
To calculate the area, we can start with the formula for the area of a square:
Since the length of each side is given as 5cm, we can substitute r with 5. After doing so, we can calculate for A, as shown below:
Now, the calculated number 25 only has meaning if we include the unit for it. Since the given length is in cm, the unit for area will be cm2. Hence:
Clearly, the answer is A.
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