Area of a Rectangle Practice

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Question 2

Given a rectangle with the area of 30in2 and its length is 6in. Find its width.


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Select and check your answer...

A. 6 in2
B. 6 in
C. 5 in2
D. 5 in2

Step by Step Solution

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    Step 1

    The picture below shows the rectangle with the length of 6in and the width of w.

    a rectangle with the length 6in and width w
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    Step 2

    Since the value of the area is given as 30in2, we can substitute A with 30. Similarly, since the length is given as 6in, we can substitute l with 6. This is shown below:

    substituting A with 30 and l with 6
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    Step 3

    Now, we have 6w = 30. Notice that, to find w, we need to remove 6. We can do so by dividing both sides of the equation with 6.

    the width is 5
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    Step 4

    Now, the calculated number 5, has no meaning until we include the unit for it. Since the area is in inch2, w will be in inch. Hence:

    w = 5 in
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    Step 5

    Therefore, the answer is D.