Use IPython.display‘s display function with a Math object:
from IPython.display import display, Math
display(Math(r'Dims: {}x{}m \\ Area: {}m^2 \\ Volume: {}m^3'.format(a, round(b,2), P, V)))
Note the use of Latex-style \\ newlines, and the r'' string, which will take the backslashes as literal backslashes and not see them as escape characters.
Found the solution here.