A Rectangle Has Perimeter 14 M $A(l)$ Of the Length $l$ Of One of Its Sides

question 60

Multiple Choice

A rectangle has perimeter 14 m. Express the area of the rectangle as a function $A(l)$ of the length $l$ of one of its sides.

• A) \(A(l)=7 l-l^{2}\)
• B) \(A(l)=l-7 l^{2}\)
• C) \(A(l)=14 l-l^{2}\)
• D) \(A(l)=14 l+l^{2}\)
• E) \(A(l)=7 l+l^{2}\)

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