Little Miami
posted by Susuan .
Two redtangles are similar. One has a length of 11 cm and a width of 6 cm, and the other has a width of 5 cm. Find the length of the second rectangle. Round to the nearest tenth if necessary.

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"Similar" shapes keep the same ratio of side lengths, although the sizes may be different. One is a magnified version of the other.
The Length/Width ratio of each rectangle is the same
In your case, 11/6 = x/5
Solve for the unknown length x, and round to nearest onetenth cm.