Answer:
75 yards long and 90 yards wide.
Explanation:
Let's first find the perimeter of the main rectangle:
100x2 + 65x2 =
330
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Next we need to find two numbers that match:
75 and 90
75x2 + 90x2 =
330
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75x90 is 6750 (More Area)
100x60 is 6500 (Less Area)