math

I know everyone is busy but could u please take a sec for this question???? Thank you in advance.
What is the length of the diagonal for the rectangular prism to the nearest whole unit?
LENGTH:12 cm
WIDTH:4 cm
HEIGHT:9 cm

A.16 cm
B.15 cm
C.13 cm
D.10 cm

i thinks its c. i think...

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  1. Neither of you is correct.

    http://www.calculatorsoup.com/calculators/geometry-solids/rectangularprism.php

  2. oof

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