Question

a rectangles width is 2 meters shorter than its length. its area is 168 square meters. which equation can be used to find the length of the rectangle?
○ ( l(l - 2)=168 )
○ ( l(l + 2)=168 )
○ ( 2l^{2}=168 )
○ ( \frac{1}{2}l^{2}=168 )

Explanation:

Step1: Let length be \(l\) and width be \(w\).

Given \(w=l - 2\) and area \(A=l\times w = 168\). Substitute \(w\) into area formula: \(l(l - 2)=168\).

Answer:

\(l(l - 2)=168\)