Find the length of the second rectangle. Round to the nearest tenth if necessary

label Mathematics
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Two rectangles are similar. One has a length of 14 cm and a width of 9 cm, and the other has a width of 3 cm. Find the length of the second rectangle. Round to the nearest tenth if necessary.

A.  5.4 cm

B.  1.9 cm

C.  3.5 cm

D.  4.7 cm

Apr 30th, 2015

L = 14 cm

W = 9 cm

L' = ?

W' = 3 cm

Since the two rectangles are similar

L/L' = W/W'

14/L' = 9/3

14/L' = 3

3L' = 14

L' = 14/3

L' = 4.7 cm

So length of the second rectangle is 4.7 cm.


ANSWER:  D)   4.7 cm


Apr 30th, 2015

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Apr 30th, 2015
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