49) check the first picture below
the actual width of the width will then be x + 20 + x or, 20+2x
and the actual length will then be x + 22 + x , or 22 + 2x
recall for a rectangle, Area = length * width
thus A = (22+2x)(20+2x) <-- FOIL it if you wish, to simplify
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50) check the 2nd picture included
so the actual length is (40+x), whilst the width is (20+2x)
A = (40+x)(20+2x)
same FOIL it if you want and simplify
