Help with matlab on plot please include code.

The stress in a spherical pressure vessel (assuming the thin wall approximation) can be calculated by:
! =
!"
2!
where ! is stress (in Pascals), ! is pressure in (in Pascals), R is the radius of the tank (in
meters), and t is the thickness of the tank (in meters). Create a plot of the pressure in a
spherical pressure vessel vs the stress seen by the pressure vessel. Create a second plot of the
thickness vs stress. Use the subplot function to place both plots in separate graphs in the same
window. Use the following data:
Plot 1
1 ≤ ! ≤ 100 Pa (use increments of 1 Pa)
R = 1.1 m
t = 0.025 m
Plot 2
! = 4 Pa
R = 2 m
0.01 ≤ t ≤ 3 m (use increments of 0.03 m)