Physical science question?

Question

In the formula T^2=KR^3, the R for Mars is: a) 687days b) 203days c) 2108days d) 142million days e) 2108miles f) 208,000miles g)142million miles h) none

Answer 1

g) 142 million miles.

However the formula is usually expressed as P^2=A^3, where A is in Astronomical Units and not miles.