units and measurements Questions

If force $[F]$, acceleration $[A]$ and time $[T]$ are chosen as the fundamental physical quantities. Find the dimensions of energy.

If $E$ and $G$ respectively denote energy and gravitational constant, then $E/G$ has dimensions of:

A screw gauge gives the following readings when used to measure the diameter of a wire:Main scale reading: $0\text{mm}$ Circular scale reading: $52\text{divisions}$ Given that $1\text{mm}$ on main scale corresponds to $100\text{divisions}$ on the circular scale. The diameter of the wire from the above data is: