Answer:
5
Step-by-step explanation:
because i know
side = 8 m
the area of the rectangle = length × width = 16 × 4 = 64 m²
the area of the square = s² ( where s is the length of a side ), hence
s² = 64 ( since areas are equal )
take the square root of both sides
s = √64 = 8 m
Answer: 
<u>Add 5 to both sides</u>
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<u>Divide both sides by 60</u>
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What am I supposed to find the area of??