Question

What’s the answer ?

Answer 1

The area of the rectangle in terms of length (l) is
`l^(2)-7l`, if the width of the rectangle is 7 feet less than its length.

Explanation:

The given is,

Width of the rectangle is 7 feet less than its length

Length is l

Step:1

Formula for area of rectangle,

Area,
`a = lb`

Where,

l - Length of the rectangle

b - Width of the rectangle

Step:2

From the given values,

w =
`l` - 7 ( ∵ from given)

The equation becomes

=
`l` × (
`l`-7 )

=
`l^(2)` - 7
`l`

Area, a =
`l^(2)` - 7
`l` square feet

Result:

The area of the rectangle in terms of length (l) is
`l^(2)-7l`, if the width of the rectangle is 7 feet less than its length.