Margaret is planning a rectangle garden. It's length is 4ft less than twice it's width. It's area is 170ft squared. What are the
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CosA=(21^2+23^2-25^2)/2*21*23
cosA=345/966
A=cos^-1(345/966)
A=69.08
cosA=345/966
A=cos^-1(345/966)
A=69.08