SOLUTION: what is the length of the diagonal of a rectangle with width 8cm and length 6 cm?

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Question 396204: what is the length of the diagonal of a rectangle with width 8cm and length 6 cm?
Answer by MathLover1(20849) About Me  (Show Source):
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the length of the diagonal=d of a rectangle with width b=8cm and length a=6+cm is
d%5E2+=+a%5E2+%2B+b%5E2
d%5E2+=+%286+cm%29%5E2+%2B%288cm%29%5E2
d%5E2+=+36cm%5E2+%2B+64cm%5E2
d%5E2+=+100cm%5E2+
d+=+sqrt%28100cm%5E2%29+
d+=+10cm+