Question

A rectangle is 3 feet long by 4 feet wide

Answer 1

Answer:

20ft^2

Step-by-step explanation:

The length is currently three feet, if you add two feet to three that makes five feet. Five times four is twenty.

I hope this helps!

Answer 2

Answer:

$20 ft^{2}$

Step-by-step explanation:

A rectangle's formula for area is:

$Area=L(w)$

Let's use the formula to find the area first.

Multiply the Length and Width:

3 · 4 = 12.

12 is our area for the previous rectangle.

Our new rectangle has a length of 3+2, and a width of 4.

Let's use the formula again to find the area of our new rectangle.

Multiply 5 by 4:

5 · 4 = 20.

The area of the new rectangle is $20ft^{2}$