If the polygons are similar, then we can set up a similarity ratio using sides AB and EF and any other 2 sides where both side lengths are given. That appears to be true for sides BC and FG. Our similarity ratio would be this then, going from the bigger polygon stuff on top and the smaller polygon stuff on bottom:
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If we cross multiply we have 8y = 36 and divide both sides by 8 to get that y = 4.5. There you go!
What grade are you in? I don't believe I have learned this yet!
Answer:
Simplify 15 by dividing it by 3, and then shade 2/3rds of the simplified sections. This should come out to 3 sections of five, so shade in 10 out of the 15 sections
You have to square it all up then add it up if you want you can use the calculator