Step-by-step explanation:
look at the picture !
she has to paint actually 6 rectangles :
the 3 tops of the 3 stairs.
and the 3 vertical front boards (the front of each step of the stairs).
what is the area of these rectangles ? summing up all 6 - that is the surface area to be painted. 
each top rectangle is clearly
82×19 (19 cm deep) = 1558 cm²
each front board is
82×12 (12 cm high) = 984 cm²
so, in total we have
3×1558 + 3×984 = 4674 + 2952 = 7626 cm²
as surface area to be painted. 
 
        
             
        
        
        
The list of equations is shown in the picture which equation has No Solution, One Solution, and Infinitely Many Solutions.
<h3>What is a linear equation?</h3>
It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
 
We have given a linear equation in one variable.

After solving:
y = 5.40   (one solution)

After solving:

 (Infinitely Many Solutions)
  (Infinitely Many Solutions)
3z + 2.5 = 3.2 + 3z
2.5 = 3.2  (no solution)
Similarly, we can identify which equation has No Solution, One Solution, and Infinitely Many Solutions.
Thus, the list of equations is shown in the picture which equation has No Solution, One Solution, and Infinitely Many Solutions.
Learn more about the linear equation here:
brainly.com/question/11897796
#SPJ1
 
        
             
        
        
        
Answer:
10 yards 2 inches 
Step-by-step explanation:
15 yd 5 in - 5 yd 3 in =
10 yards and 2 inches