Question

A rectangle’s width is 2 meters shorter than its length, l. Its area is 168 square meters. Which equation can be used to find the length of the rectangle?
A. l(l – 2) = 168
B. l(l + 2) = 168
C. 2l 2 = 168
D. l 2 = 168

Answer 1

Answer:

A

Step-by-step explanation:

The area (A) of the triangle is the product of its length (l) and width (w). A = l x w. Since the width is 2 m shorter than the length, it may be expressed as w = l -2. The equation for area becomes,

                         A = l x (l - 2)

Substituting the known area and rearranging the equation gives,

                          l(l - 2) = 168.

Answer 2

Answer:

A

Step-by-step explanation:

Let length be "l"

width = l-2 m

Area of rectangle = length * width

so l(l-2) = 168

P.S: L= 14 cm