posted by olav .
There is on large rectangle ABCD, top line is AD and bottom is BC.
A line is drawn from the top to bottom called GH.
A line is drawn from left to right called EF.
AEFG is Rectangle 1.
EBHF is Rectangle 2.
GHCD is Rectangle 3.
All three rectangles are similar.
Length of line AE is 4cm.
Length of line EB is 9cm.
What is the area of rectangle GHCD ? another rectangle within ABCD called