How to find the perimeter of a figure - HSPT Math
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Find the perimeter of a rectange with length 9 and width 4.
Find the perimeter of a rectange with length 9 and width 4.
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To solve, simply use the formula for the perimeter of a rectangle.
Given the length of the rectangle is 9 and the width is 4; substitute these values into the perimeter equation.
Thus,
To solve, simply use the formula for the perimeter of a rectangle.
Given the length of the rectangle is 9 and the width is 4; substitute these values into the perimeter equation.
Thus,
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What is the perimeter of the triangle below?
What is the perimeter of the triangle below?
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To find the perimeter, we add all of the side lengths together.
To find the perimeter, we add all of the side lengths together.
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What is the perimeter of the triangle below?
What is the perimeter of the triangle below?
Tap to reveal answer
To find the perimeter, we add all of the side lengths together.
To find the perimeter, we add all of the side lengths together.
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What is the perimeter of the triangle below?
What is the perimeter of the triangle below?
Tap to reveal answer
To find the perimeter, we add all of the side lengths together.
To find the perimeter, we add all of the side lengths together.
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What is the perimeter of the triangle below?
What is the perimeter of the triangle below?
Tap to reveal answer
To find the perimeter, we add all of the side lengths together.
To find the perimeter, we add all of the side lengths together.
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What is the perimeter of the triangle below?
What is the perimeter of the triangle below?
Tap to reveal answer
To find the perimeter, we add all of the side lengths together.
To find the perimeter, we add all of the side lengths together.
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What is the perimeter of the triangle below?
What is the perimeter of the triangle below?
Tap to reveal answer
To find the perimeter, we add all of the side lengths together.
To find the perimeter, we add all of the side lengths together.
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What is the perimeter of the polygon below?
What is the perimeter of the polygon below?
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To find the area of a perimeter, we add all of the side lengths together.
To find the area of a perimeter, we add all of the side lengths together.
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What is the perimeter of the polygon below?
What is the perimeter of the polygon below?
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To find the area of a perimeter, we add all of the side lengths together.
To find the area of a perimeter, we add all of the side lengths together.
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A rectangular garden has an area of 
. Its length is 
meters longer than its width. How much fencing is needed to enclose the garden?
A rectangular garden has an area of
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We define the variables as 
and 
.
We substitute these values into the equation for the area of a rectangle and get 
.
or 
Lengths cannot be negative, so the only correct answer is 
. If 
, then 
.
Therefore, 
.
We define the variables as
We substitute these values into the equation for the area of a rectangle and get
Lengths cannot be negative, so the only correct answer is
Therefore,
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What is the circumference of a circle with a radius of 5?
What is the circumference of a circle with a radius of 5?
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The formula for circumference is 
or 
.
Since we are given the radius, we will use 
.
The formula for circumference is
Since we are given the radius, we will use
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What is the perimeter of a square with a side length of 4?
What is the perimeter of a square with a side length of 4?
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The formula for the perimeter of a square is 
, where 
is the length of one side of the square.
So 
The formula for the perimeter of a square is
So
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If the perimeter of a rectangle is 40, and the width of the rectangle is 8, what is the length of the rectangle?
If the perimeter of a rectangle is 40, and the width of the rectangle is 8, what is the length of the rectangle?
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The formula for the perimeter of a rectangle is 
, where 
is the length of the rectangle and 
is the width.
Plug in the numbers that we are given into the equation.
The formula for the perimeter of a rectangle is
Plug in the numbers that we are given into the equation.
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What is the perimeter of a rectangle with a base of 4 and a height of 8?
What is the perimeter of a rectangle with a base of 4 and a height of 8?
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When searching for the perimeter of a rectangle we are looking for the sum of the lengths of all of the sides enclosing the figure. In this case there are four sides, two that are the base and two that are the height. To find the perimeter we add all four of them together.
Therefore the equation for the perimeter of a rectangle is 
In this case the equation looks like this 
Multiply the numbers together 
Then add them to get the answer 
When searching for the perimeter of a rectangle we are looking for the sum of the lengths of all of the sides enclosing the figure. In this case there are four sides, two that are the base and two that are the height. To find the perimeter we add all four of them together.
Therefore the equation for the perimeter of a rectangle is
In this case the equation looks like this
Multiply the numbers together
Then add them to get the answer
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What is the height of a rectangle with a perimeter of 30 and base of 12?
What is the height of a rectangle with a perimeter of 30 and base of 12?
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The perimeter of a rectangle is the sum of four sides, two that are the base and two that are the height. To find the perimeter we add all four of them together.
Therefore the equation for the perimeter of a rectangle is 
In this example we plug in the base and the perimeter so the equation looks like this 
Perform the multiplication to get 
Subtract from both sides to arrive at 
Then divide by 2 to find the height 
The answer 
The perimeter of a rectangle is the sum of four sides, two that are the base and two that are the height. To find the perimeter we add all four of them together.
Therefore the equation for the perimeter of a rectangle is
In this example we plug in the base and the perimeter so the equation looks like this
Perform the multiplication to get
Subtract from both sides to arrive at
Then divide by 2 to find the height
The answer
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What is the perimeter of a square with a side legnth of 8?
What is the perimeter of a square with a side legnth of 8?
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When searching for the perimeter of a square we are looking for the sum of the lengths of all of the sides enclosing the figure. In this case there are four sides that are all equal length. To find the perimeter we add all four of them together or multiply the side length by four.
In this example the equation looks like this:
Multiply the numbers together to get 
.
When searching for the perimeter of a square we are looking for the sum of the lengths of all of the sides enclosing the figure. In this case there are four sides that are all equal length. To find the perimeter we add all four of them together or multiply the side length by four.
In this example the equation looks like this:
Multiply the numbers together to get
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What is the radius of a circle with a circumference of 
?
What is the radius of a circle with a circumference of
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To find the radius of a circle given the circumference we must first know the equation for the circumference of a circle which is
 "Circumference=2\pi(r)")
Then we plug in the circumference into the equation for 
yielding 
We then divide each side by 
: 
We then have the answer for 
which is 
.
To find the radius of a circle given the circumference we must first know the equation for the circumference of a circle which is
Then we plug in the circumference into the equation for
We then divide each side by
We then have the answer for
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What is the perimeter of a square with a diagonal of 
?
What is the perimeter of a square with a diagonal of
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To find the perimeter of the square, find the length of the side. Write the formula to find the length of the side.
Substitute the diagonal and solve for the side.
First, square each side to get rid of the square root.
Divide 2 by each side to isolate the 
Take the square root of each side.
Since there are four sides in a square, multiply the side length by four to get the perimeter.
To find the perimeter of the square, find the length of the side. Write the formula to find the length of the side.
Substitute the diagonal and solve for the side.
First, square each side to get rid of the square root.
Divide 2 by each side to isolate the
Take the square root of each side.
Since there are four sides in a square, multiply the side length by four to get the perimeter.
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An equilateral triangle has a length of 
. What is the perimeter?
An equilateral triangle has a length of
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The perimeter of an equilateral triangle is three times the length of its side.
The perimeter of an equilateral triangle is three times the length of its side.
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What is the perimeter of a square with a side length of 
?
What is the perimeter of a square with a side length of
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Write the perimeter formula for a square.
Substitute the side length in the formula and simplify.
Write the perimeter formula for a square.
Substitute the side length in the formula and simplify.
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