Rectangle's perimeter formula is p=2(length+width)
2(9x+8x)=68
17x=34
x=2
length is 9(2)=18 feet
width is 8(2)=16feet
X=22. The supplementary angle is 90°, so the 66° angle, plus (x+2) has to add up to 90° too.
Answer:
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