In how many ways can four people sit in a car for a road trip if only two of them can drive?

well lets put it in terms of A B C D

so if A and B are the only ones who can drive then we can figure out this pretty easily

ABCD ABDC ACBD ACDB ADCB ADBC

so that's 6 ways

and if B Drives that gives us another 6

so together thats 12

might be wrong have not been in middle school for a while  

d is correct

step-by-step explanation:

126.66 m²

step-by-step explanation:

the pertinent area formula is a = πr², where r is the radius.

here, a = π(6.35 m)² = 40.32π, or approximately 126.66 m²