Two 2.80cm×2.80cm plates that form a parallel-plate capacitor are charged to ±0.708nC

Two 2.80cm×2.80cm plates that form a parallel-plate capacitor are charged to ±0.708nC.

A) What is the electric field strength inside the capacitor if the spacing between the plates is 1.00mm?
Express your answer with the appropriate units.
B) What is potential difference across the capacitor if the spacing between the plates is1.00mm?
Express your answer with the appropriate units.
C) What is the electric field strength inside the capacitor if the spacing between the plates is 2.00mm?
Express your answer with the appropriate units.
D) What is the potential difference across the capacitor if the spacing between the plates is 2.00mm?
Express your answer with the appropriate units.