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The area of an equilateral triangle with a side length of 4
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01 Sep 2020, 03:44
01 Sep 2020, 03:44
Expert Reply
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A
B
C
D
Question Stats:
55% (00:48) correct
44% (00:53) wrong based on 29 sessions
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Quantity A |
Quantity B |
The area of an equilateral triangle with a side length of 4 |
The area of an isosceles right triangle with a hypotenuse of 4√2 |
A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
KUDOS for the right solution and explanation
Re: The area of an equilateral triangle with a side length of 4
[#permalink]
03 Sep 2020, 01:24
03 Sep 2020, 01:24
1
Area of Equilateral Triangle:
S2√3/4
Given side = 4
So A = 4√3
Area of Isosceles Right Triangle:
A = 12 L * B
We know the ratio of sides:
x:x:x√2 = L:B:H
Given, H = 4√2
so x√2 = 4√2
x = 4
and
A = 12 4 * 4
A = 8
So Quantity B is greater
S2√3/4
Given side = 4
So A = 4√3
Area of Isosceles Right Triangle:
A = 12 L * B
We know the ratio of sides:
x:x:x√2 = L:B:H
Given, H = 4√2
so x√2 = 4√2
x = 4
and
A = 12 4 * 4
A = 8
So Quantity B is greater
Re: The area of an equilateral triangle with a side length of 4
[#permalink]
03 Sep 2020, 04:49
03 Sep 2020, 04:49
1
An Equilateral triangle can be further broken into 30:60:90 triangle, then the hypotenuse will be 4, shortest side will be 2 while the medium side(height of the triangle) will be 2√3 (following the law of 30:60:90 triangle x:x√3:2x)
The the area will be 1/2*4*2√3= 4√3...
An isocles right angle triangle means 2 sided will be equal (this implies that apart from the 90 degree angle the other angles will be 45 each)
Then 45:45:90 triangle will equal x:x:x√2
Since the hypotenuse is 4 which denote x
Then the other 2 sides will be 4 each
Area = 1/2*4*4=8
Hence answer equal B
Posted from my mobile device
The the area will be 1/2*4*2√3= 4√3...
An isocles right angle triangle means 2 sided will be equal (this implies that apart from the 90 degree angle the other angles will be 45 each)
Then 45:45:90 triangle will equal x:x:x√2
Since the hypotenuse is 4 which denote x
Then the other 2 sides will be 4 each
Area = 1/2*4*4=8
Hence answer equal B
Posted from my mobile device
