Don't work it out by hand; find the "x root" button on your calculator!
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The cube root is the side of a cube.
The cube root of a negative number is negative.
The side of a square is is cube root of 2cm. Find the length of the diagonals.
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3.68403149864039........ If you have a scientific calculator, there should be a "yx" key or maybe a "^" key. To find a cube root, use the exponent (1/3).