Perimeter of a Square Practice

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Question 2

Given a square with the perimeter of 12ft. Find the length of each side of the square.

Answer

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Select and check your answer...

A. 2 ft
B. 3 ft
C. 4 ft
D. 5 ft

Step by Step Solution

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    Step 1

    The picture below shows the square with sides of length L.

    a square with the sides of length L
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    Step 2

    We start with the formula for the perimeter of the square, P=4L. Since the area is given as 12ft, we can substitute P with 12 as shown below:

    substituting P with 12
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    Step 3

    Now, we have 4L = 12. To find L, we need to divide both sides of the equation with 4. This is shown below:

    dividing both sides of the equation with 4
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    Step 4

    Now, the calculated number 3, has no meaning unless we include the unit for it. Since the perimeter is in feet, L will also be in feet. Hence:

    L = 3ft
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    Step 5

    Clearly, the answer is B.

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