In the diagram, the blue region is
a square with an area of 25. If EH has a length twice
that of IH, and HG has a length four times
that of HK, then what is the perimeter of rectangle
EFGH?
Countinue
The area of a square is a side times a side, or s 2.
We are given the area which we can then use to find the sides IH
and HK:
Since the length of the rectangle is 4 times the side, it equals
20. Since the width of the rectangle is 2 times the side, it equals
10. The perimeter of the rectangle is therefore 2(20)+2(10)=60.
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