How to find the perimeter of a rectangle in pre-algebra - High School Math

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Question

Rectangle

What is the perimeter of the rectangle?

Answer

The perimeter of a rectangle is the sum of the length of each of the four sides.

Since

substitute each in:

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Question

Find the perimeter of a rectangle with length 8 inches and width 10 inches.

Answer

To find perimeter, add up all the sides. In a rectangle, there are 2 sets of identical sides so you can multiply the length by 2 and the width by 2 and combine them to get 36 inches.

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Question

Find the perimeter of a rectangle with a length of 20 inches and a width of 12 inches.

Answer

Add up all of the sides of the rectangle to get 64 inches.

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Question

What is the perimeter of a rectangle with a base of and a height of ?

Answer

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this we plug the base and height into the equation

With a base of and a height of our equation would look like

Multiply and add the numbers together

The answer is .

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Question

Calculate the perimeter of the polygon.

Number_1

Answer

The perimeter is the sum of the length of all of the sides. We are given all of the side lengths in the figure, so we simply need to sum them together.

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Question

What is the perimeter of a rectangle if the length is and the width is ?

Answer

The perimeter of a rectangle is .

Plug in our given information to solve:

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Question

What is the perimeter of a rectangle with a base of and a height of ?

Answer

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this, we plug the base and height into the equation .

With a base of and a height of our equation becomes .

Multiply and add the numbers together:

The answer is .

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Question

What is the perimeter of a rectangle with a base of and a height of ?

Answer

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this we plug the base and height into the equation

With a base of and a height of our equation would look like

Multiply and add the numbers together

The answer is .

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Question

What is the perimeter of a rectangle with a base of and a height of ?

Answer

To find the perimeter of a rectangle you must find the sum of all of the side lengths.

To do this we plug the base and height into the equation

With a base of and a height of our equation would look like

Multiply and add the numbers together

The answer is .

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Question

What is the perimeter of a rectangle with a base of and a height of ?

Answer

To find the perimeter of a rectangle, find the sum of all of the side lengths using the equation:

Substitute the given values for base and height:

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Question

Rectangle ABCD is subdivided into two identical square regions. If the area of each square is , what is the perimeter of ABCD ?

Answer

Given that the area of each square is , the side length of each square is . To find the perimeter of the entire shape, one must add up the lenghts of the sides of the shape. Thus the sides of the rectangle are each , and the bases are (because the squares are connected). Adding them all together gives us .

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Question

A rectangle has a width of feet and a length of feet. What is the perimeter of the rectangle?

Answer

Recall that perimeter is the sum of all of the sides of a shape. Thus, we are adding up all sides of the rectangle. A rectangle has two sides that are the length and two sides that are the width. Thus,

feet.

Perimeter is a measure of length, and not area (or square feet), so our units are just feet.

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