Question

Find the area of the rectangle below.
(3x+4)feet (x+3)feet

Answer 1

Answer:

3x^2+13x+12 square feet.

Step-by-step explanation:

Since the formula for area is lxw so we Multiply the given using the foil method: (3x+4)(x+3)

3x^2+9x+4x+12, combine like terms

3x^2+13x+12, since we no longer have other like terms then the area is 3x^2+13x+12 square feet.

Answer 2

Answer:

Area of rectangle = $3x^2+13x+12$ square feet

Step-by-step explanation:

We are given the following dimensions of a rectangle and we are to find its area:

$( 3 x + 4 ) feet$

$( x + 3 ) feet$

We know that the formula of area of a rectangle is given by: $l \times w$.

Substituting the given dimensions in the above formula.

Area of rectangle = $(3x+4) \times (x+3)$ = $3x^2+9x+4x+12$ = $3x^2+13x+12$ square feet