The diagram below shows five squares of respective side lengths 1, 1, 2, 3 and 5. The centres A, B and C of three of the squares lie on a straight line. What is the ratio of the length BC to the length AB?

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Answer 1 · 2017-04-25T03:28:04

#BC : AB = 1 : 2#

enter image source here

As can be seen in the figure, #(BC)/1.5=(AB)/3#

#=> BC =1/2AB#

#=> BC : AB = 1:2#