SOLUTION: Find the diagonals of a rectangular solid if the length is 8 width is 4 and height is 2

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Question 624230: Find the diagonals of a rectangular solid if the length is 8 width is 4 and height is 2
Answer by Alan3354(69443) About Me  (Show Source):
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Find the diagonals of a rectangular solid if the length is 8 width is 4 and height is 2
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On the faces:
d+=+sqrt%288%5E2+%2B+2%5E2%29+=+sqrt%2868%29
d+=+sqrt%288%5E2+%2B+4%5E2%29+=+sqrt%2880%29
d+=+sqrt%282%5E2+%2B+4%5E2%29+=+sqrt%2820%29
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The long diagonal going thru the center of the solid is
d%5E2+=+sqrt%282%5E2+%2B+4%5E2+%2B+8%5E2%29+=+sqrt%2884%29