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 $($doubles$).$ Calculate and output the wall's area to one decimal place using System. out.printf $("$Wall area: $\%\mathrm{.}1$f sq ft $\frac{?}{?}$

$",$ area$)$ ; Submit for grading to confirm $1$ test passes. Ex: If the input is:

$12\mathrm{.}0,15\mathrm{.}0,29\mathrm{.}95$

the output is:

Wall area: $180\mathrm{.}0sq$ ft

Step $2(2$ pts$).$ Calculate and output the amount of paint needed to three decimal places. One gallon of paint covers $350$ square feet.

Submit for grading to confirm $2$ tests pass.

Ex: If the input is:

$12\mathrm{.}0,15\mathrm{.}0,29\mathrm{.}95$

the output is:

Wall area: $180\mathrm{.}0sqft$

Paint needed: $0\mathrm{.}514$ gallons

Step $3(2$ pts$).$ Calculate and output the number of $1$ gallon cans needed to paint the wall. Extra paint may be left over. Hint: Use Math.ceil$()$