Mathematics for IGCSE & O level - Equations (Section 5 - No. 50)
Which operations will result to find the area of the path if you have a rectangular pen inside a rectangular path, using the given information?
Find the area of the outer rectangle.
Find the area of the inner rectangle.
Subtract the area of the inner rectangle from the outer rectangle.
Add the area of the inner and outer rectangles.
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The area of the path is outer area minus the inner area.