Posted by **mike** on Tuesday, May 17, 2011 at 1:52pm.

the sides of a triangle is 9,12,15cm..Find the sides of a similar triangle if the longest side is 20 cm

- geometry -
**Reiny**, Tuesday, May 17, 2011 at 5:15pm
a/9 = b/12 = 20/15

easy to find a and b

or

(9,12,15) = 3(3,4,5)

(?,?,20) = 4(3,4,5)

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