The space diagonal will have length ...
... d = √(1² +4² +2²) = √(1 +16 +4) = √21
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This can be found using the Pythagorean theorem. A drawing can help. Find the length of any face diagonal, then use that length as the leg of a right triangle whose hypotenuse is the space diagonal and whose other leg is the edge length not used in the first calculation.
Its 5. Its none of those.
10% of 50.00 = 5.0000
-6/3 division sign 2/-9
To solve: multiply by reciprocal inverse
-6/3 x -9/2= 54/6 or 9
