27 "
Explanation
Step 1
graph
to find the total height of teh staircase we need to add all teh rises, ( in other words we can multiply the length of a rise by the number of steps)
then ; let
number of steps=4
rise=.75
[tex]\begin{gathered} H=\text{rise}\cdot\nu\text{mber of steps} \\ \text{replace} \\ H=6.75"\cdot4 \\ H=27" \end{gathered}[/tex]therefore, the answer is
27 "
I hope this helps you
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