Calculating the perimeter of an equilateral triangle - GMAT Quantitative Reasoning
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The area of an equilateral triangle 
is 
. What is the perimeter of 
?
The area of an equilateral triangle
The area is given, which will allow us to calculate the side of the triangle and hence we can also find the perimeter.
The area for an equilateral triangle is given by the formula
, where 
is the length of the side of the triangle.
Therefore, 
, where 
is the area.
Thus 
, and the perimeter of an equilateral triangle is three times the side, hence, the final answer is 
.
The area is given, which will allow us to calculate the side of the triangle and hence we can also find the perimeter.
The area for an equilateral triangle is given by the formula
Therefore,
Thus
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Find the perimeter of an equilateral triangle whose side length is 
.
Find the perimeter of an equilateral triangle whose side length is
To find the perimeter, you must multiply the side length by 
. Thus,
To find the perimeter, you must multiply the side length by
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Calculate the perimeter of an equilateral triangle whose side length is 
.
Calculate the perimeter of an equilateral triangle whose side length is
To solve, simply multiply the side length by 
. Thus,
To solve, simply multiply the side length by
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A given equilateral triangle has a side length of 
. What is the perimeter of the triangle?
A given equilateral triangle has a side length of
An equilateral triangle with a side length 
has a perimeter 
.
Given:
,
.
An equilateral triangle with a side length
Given:
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A given equilateral triangle has a side length of 
. What is the perimeter of the triangle?
A given equilateral triangle has a side length of
An equilateral triangle with a side length 
has a perimeter 
.
Given:
,
.
An equilateral triangle with a side length
Given:
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A given equilateral triangle has a side length of 
. What is the perimeter of the triangle?
A given equilateral triangle has a side length of
An equilateral triangle with a side length 
has a perimeter 
.
Given:
,
.
An equilateral triangle with a side length
Given:
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Given the following regarding Triangle 
.
I) 
II) Side 
is equal to 
light-years
What is the length of side 
?
Given the following regarding Triangle
I)
II) Side
What is the length of side
The trick to this one is to carefully put together what you are given.
We know that two of our angles are equal to 60 degrees. This means that the last angle is also 60 degrees. This make HFT an equilateral triangle.
Equilateral triangles always have equal sides and equal angles, so our last side has to be 7 light years as well.
The trick to this one is to carefully put together what you are given.
We know that two of our angles are equal to 60 degrees. This means that the last angle is also 60 degrees. This make HFT an equilateral triangle.
Equilateral triangles always have equal sides and equal angles, so our last side has to be 7 light years as well.
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Calculate the perimeter of an equilateral triangle whose side length is 
.
Calculate the perimeter of an equilateral triangle whose side length is
The perimeter of an equilateral triangle is:
Thus.
The perimeter of an equilateral triangle is:
Thus.
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