Respuesta :
Answer:
(2x + 20) ft^2.
Step-by-step explanation:
Area = length * width
= 2 * (x + 10)
= (2x + 20) ft^2.
The answer is B. When finding the area of a rectangle, you multiply the base and the width. In this case, the length is 2 feet and the width is x + 10 feet. You now multiply them both, which turn out to be B.