Question 849111
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Hi
It gives the area of the smaller rectangle, let's say it is 40
larger rectangle Area = 160
Ratios of the Areas is the ratio of corresponding sides squared.
 (8/x)^2 = 160/40 = 4
 64/x^2 = 4
 16 = x^2
 4 = x       (Tossing out the negative solution for unit measure)
repeat
(20/y)^2= 4
 20^2/y^2 = 4
400/4 = y^2
 10 = y