Final answer:
The area of the rectangular roof can be found by multiplying its length and width, which are given as 6x and 4x^3, respectively. The correct answer is 24x^4 square feet. Therefore correct option is B
Step-by-step explanation:
The area of a rectangle is found by multiplying its length and width.
In this case, the width of the roof is given as 4x^3 feet and the length is given as 6x feet.
To find the area, we multiply the length and width: (4x^3) * (6x) = 24x^4 square feet.
Therefore, the correct answer is option b) 24x^4 square feet.
Learn more about Area of Rectangle