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Basic Geometry : How to find the length of the side of a rectangle

Study concepts, example questions & explanations for Basic Geometry

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Example Questions

Example Question #11 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of a rectangle is , and the length of the rectangle is , what is the width of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the width.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{width}=\frac{\text{Perimeter}}{2}-\text{length}$

Now, plug in the information given by the question to find the width.

$\text{width}=\frac{20}{2}-9=10-9=1$

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Example Question #72 : Rectangles

If the perimeter of the rectangle is , and the length of the rectangle is , what is the width of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the width.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{width}=\frac{\text{Perimeter}}{2}-\text{length}$

Now, plug in the information given by the question to find the width.

$\text{width}=\frac{54}{2}-12=27-12=15$

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Example Question #13 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of a rectangle is , and the length of the rectangle is , what is the width of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the width.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{width}=\frac{\text{Perimeter}}{2}-\text{length}$

Now, plug in the information given by the question to find the width.

$\text{width}=\frac{22}{2}-5=11-5=6$

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Example Question #11 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of the rectangle is , and the width of the rectangle is , what is the length of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the length.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{length}=\frac{\text{Perimeter}}{2}-\text{width}$

Now, plug in the information given by the question to find the length.

$\text{length}=\frac{24}{2}-10=12-10=2$

Report an Error

Example Question #15 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of a rectangle is 200 , and the width of the rectangle is , what is the length of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the length.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{length}=\frac{\text{Perimeter}}{2}-\text{width}$

Now, plug in the information given by the question to find the length.

$\text{length}=\frac{200}{2}-54=100-54=46$

Report an Error

Example Question #16 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of the rectangle is , and the width of the rectangle is , what is the length of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the length.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{length}=\frac{\text{Perimeter}}{2}-\text{width}$

Now, plug in the information given by the question to find the length.

$\text{length}=\frac{56}{2}-12=28-12=16$

Report an Error

Example Question #17 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of a rectangle is , and the width of the rectangle is , what is the length of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the length.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{length}=\frac{\text{Perimeter}}{2}-\text{width}$

Now, plug in the information given by the question to find the length.

$\text{length}=\frac{64}{2}-17=32-17=15$

Report an Error

Example Question #18 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of a rectangle is , and the width of the perimeter is , what is the length of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the length.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{length}=\frac{\text{Perimeter}}{2}-\text{width}$

Now, plug in the information given by the question to find the length.

$\text{length}=\frac{66}{2}-15=33-15=18$

Report an Error

Example Question #19 : How To Find The Length Of The Side Of A Rectangle

If the perimeter of a rectangle is , and the width of the rectangle is , what is the length of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle.

$\text{Perimeter}=2(\text{length}+\text{width})$

We can then manipulate this equation to find the length.

$\text{length}+\text{width}=\frac{\text{Perimeter}}{2}$

$\text{length}=\frac{\text{Perimeter}}{2}-\text{width}$

Now, plug in the information given by the question to find the length.

$\text{length}=\frac{96}{2}-46=48-46=2$

Report an Error

Example Question #20 : How To Find The Length Of The Side Of A Rectangle

If the area of a rectangle is , and the length of the rectangle is , what is the width of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the area of a rectangle.

$\text{Area}=\text{length}\times\text{width}$

We can divide both sides by the length to find the width.

$\text{Width}=\frac{\text{Area}}{\text{length}}$

Now, plug in the information from the question.

$\text{Width}=\frac{45}{9}=5$

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Basic Geometry : How to find the length of the side of a rectangle

Study concepts, example questions & explanations for Basic Geometry

All Basic Geometry Resources

Example Questions

Example Question #11 : How To Find The Length Of The Side Of A Rectangle

Example Question #72 : Rectangles

Example Question #13 : How To Find The Length Of The Side Of A Rectangle

Example Question #11 : How To Find The Length Of The Side Of A Rectangle

Example Question #15 : How To Find The Length Of The Side Of A Rectangle

Example Question #16 : How To Find The Length Of The Side Of A Rectangle

Example Question #17 : How To Find The Length Of The Side Of A Rectangle

Example Question #18 : How To Find The Length Of The Side Of A Rectangle

Example Question #19 : How To Find The Length Of The Side Of A Rectangle

Example Question #20 : How To Find The Length Of The Side Of A Rectangle

All Basic Geometry Resources

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