The approximate side length of the frame to the nearest whole number is 4 inches.
Area of square = side length ²
18 = side length ²
find the square root of both sides
side length= √18
= 4.24264068711928514640506617262909423570
Approximately to the nearest whole number is 4 inches
Therefore, the approximate side length of the frame to the nearest whole number is 4 inches
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