The rectangle to the right has width 5x^8 feet and length 4x^3 feet. Find its area as an expression of x.

The area of the rectangle is ____________
(Simplify your​ answer.)

The area of a rectangle is given by the formula: length * width.

In this case, the length is 4x^3 feet, and the width is 5x^8 feet.

The area can be found by multiplying the length and width:

Area = (4x^3)(5x^8)
= 20x^3 * x^8
= 20x^(3+8)
= 20x^11

Therefore, the area of the rectangle is 20x^11 square feet.