a sports team is building a new stadium on a rectangular lot of land. if the lot measures 6x by 10x and the stadum will be 1x by 4x, how much will be left over to build a parking lot?

a ) 56x^2
b ) 64x^2
c ) 30x^2
d ) 60x^2

To find out how much land will be left over for the parking lot, we need to subtract the area of the stadium from the area of the lot.

The area of the lot is given by length multiplied by width: 6x * 10x = 60x^2.

The area of the stadium is given by length multiplied by width: 1x * 4x = 4x^2.

Therefore, the remaining area for the parking lot is: 60x^2 - 4x^2 = 56x^2.

Thus, the correct answer is:

a) 56x^2