Python Programming Program Specifications Write a program to calculate the cost to paint a wall. Amount of required paint is based on the wall area. Total cost includes paint and sales tax.

Note: This program is designed for incremental development. Complete each step and submit for grading before starting the next step. Only a portion of tests pass after each step but confirm progress.

Step $1(2$ pts$).$ Read from input wall height, wall width, and cost of one paint can $($floats$).$ Calculate and output the wall's area to one decimal place using print$($f$"$Wall area: $\{$wall$\_$area:$\mathrm{.}1$f$\}$ sq ft$")$;$.$ Submit for grading to confirm $1$ test passes.