HarveyKlaus wrote:
The volume of a cube is 64. Which quantity is greater?
Quantity A |
Quantity B |
The area of the base of the cube |
32 |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
How to find the "The area of the base of the cube" ?
Any idea?
Thanks
In a cube, all sides have the SAME length.
So, let's say that each side has length
xVolume of a cube = (side length)³So, we can write:
x³ = 64
Solve to get:
x = 4So, we have:
Since all 6 faces of a cube are identical, it doesn't matter which face we use to calculate the area.
We need only recognize that each face is a SQUARE
Area of a SQUARE= (side length)²So, the area of the base =
4² = 16
We get:
Quantity A: 16
Quantity B: 32
Answer: B
Cheers,
Brent
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Brent Hanneson – Creator of greenlighttestprep.com
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