The surface area of a cube is 486 ft2.
What is the area of one face of this cube?
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OpenStudy (anonymous):
help @cwrw238
OpenStudy (anonymous):
@ignaris
OpenStudy (mathstudent55):
How many faces does a cube have?
OpenStudy (anonymous):
6
OpenStudy (mathstudent55):
|dw:1420405409003:dw|
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OpenStudy (anonymous):
so is the answer2916
OpenStudy (mathstudent55):
Correct.
If all the faces together have an area of 486 ft^2, then one face has that area ***divided*** by 6.
OpenStudy (anonymous):
thanks i gave you a medal
OpenStudy (mathstudent55):
What did you get?
OpenStudy (anonymous):
you help me understand more
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OpenStudy (anonymous):
2916
OpenStudy (mathstudent55):
No. Read my explanation above. You need to divide, not multiply.
When you answer math questions, the answers must make sense.
If the entire cube has an area of 486 ft^2, does one single face have more area or less area than the entire 6 faces of the cube?
OpenStudy (anonymous):
o
OpenStudy (anonymous):
so 81
OpenStudy (mathstudent55):
1 face of the cube must have less area than all the 6 faces of the cube.
That means the answer cannot be 1916 ft^2 which is much more than 486 ft^2.
The answer is 486 ft^2 / 6 (Do a division, not a multiplication.)
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