SOLUTION: The side of a cube is 3 cm. What is its volume (in cubic cm)? (a) 20 (b) None of these (c) 36 (d) 27 (e) 64

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Question 978656: The side of a cube is 3 cm. What is its
volume (in cubic cm)?
(a) 20
(b) None of these
(c) 36
(d) 27
(e) 64
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Since all of the edges of a cube are of equal length, there is no need to differentiate between the length, width and height. The volume of a cube is determined by multiplying the length of three edges of the cube. Let "a" define the length of an edge of the cube.
Then the volume formula is defined as:
V+=+a+%2Aa%2A+a
This formula is also written as V+=+a%5E3
so, if given a=3cm, than V+=+%283cm%29%5E3=>V+=+27cm%5E3
and your answer is (d) 27