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505-555 (Easy)|   Geometry|      
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Bunuel
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The edges of a cube are made out of wire. If the surface area of that 03 Nov 2023, 01:30
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B
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15% (low)

Question Stats:

79% (00:59) correct 21% (01:21) wrong based on 48 sessions

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The edges of a cube are made out of wire. If the surface area of that cube is 24, what is the total length of the wire?

A. 12
B. 24
C. 36
D. 48
E. 96


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B
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Introvertuprising
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The edges of a cube are made out of wire. If the surface area of that 03 Nov 2023, 02:23
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Surface area of cube =6(s^2)

24 =6(s^2)

4=s^2

s=2

Total length of cube is 12*s(cube has 12 edges) =12*2 =24
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rey1009
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The edges of a cube are made out of wire. If the surface area of that 03 Nov 2023, 13:43
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surface area = 6a^2=24
a=2
length of wire = 12a = 24
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The edges of a cube are made out of wire. If the surface area of that 04 Nov 2023, 10:53
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To solve this question what I did,

Surface area of cube = sum of the area of all 6 faces on a cube
Let’s say area of each face is X
So 6X = 24
Divide both sides by 6
X=4

Now to find the length of one edge of the cube we know that one face ( a square) has an area of 4
So square root of 4 = 2 ( we do square root as both sides of a square are equal)
One edge = 2
There are total 12 edges in a cube so 2*12 = 24
Answer = B

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