# Cube diagonals

The cube has a wall area of 81 cm square. Calculate the length of its edge, wall, and body diagonal.

Correct result:

a =  9 cm
u1 =  12.7279 cm
u2 =  15.5885 cm

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Showing 1 comment: Math student
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Pythagorean theorem is the base for the right triangle calculator.

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