SOLUTION: What is the length of the diagonal of a right rectangular prism with dimensions l = 5cm, w = 4 cm, and h = 3 cm?

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Question 266431: What is the length of the diagonal of a right rectangular prism with dimensions l = 5cm, w = 4 cm, and h = 3 cm?
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
this is a 3 dimensional pythagorean theorem and is expressed as
d+=+sqrt%28l%5E2+%2B+w%5E2+%2B+h%5E2%29
or
d+=+sqrt%285%5E2+%2B+4%5E2+%2B+3%5E2%29
which is
d+=+sqrt%2825%2B+16+%2B+9%29
or
d+=+sqrt%2850%29
so,
d = 5sqrt(2)