# Cube diagonals

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

Result

a =  9 cm
u1 =  12.728 cm
u2 =  15.588 cm

#### Solution:

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Math student
very nice this calculator thnk

#### To solve this example are needed these knowledge from mathematics:

Pythagorean theorem is the base for the right triangle calculator. See also our trigonometric triangle calculator.

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