MathDB
internal diagonal length

Source:

October 16, 2005
geometry

Problem Statement

The total area of all the faces of a rectangular solid is 22cm222 \text{cm}^2, and the total length of all its edges is 24cm24 \text{cm}. Then the length in cm\text{cm} of any one of its internal diagonal is A. 11\sqrt{11} B. 12\sqrt{12} C. 13\sqrt{13} D. 14\sqrt{14} E. Not uniquely determined