C. 6.2g can be combined with -3/8y. This is because they both end in ‘y’.
        
                    
             
        
        
        
Answer:
56.6 square yards.
Step-by-step explanation:
Given:
A fountain in the park has two circular pools that are the same size. 
<u>Question asked:</u>
What is the total area of the pools if the radius is 3 yards ?
<u>Solution:</u>
First of all we will calculate the area of a circular pool.
As we know:

                        
Area of circular pool nearest tenth = 28.3 square yards
Now, as given that both pools are of same size.
Total area of the pools = 28.3 square yards + 28.3 square yards
                                       = 56.6 square yards.
Thus, the total area of the pools are 56.6 square yards.
 
        
                    
             
        
        
        
Answer: Length = 12 units
Width = 6 units
Step-by-step explanation:
Let the width of the rectangle be represented by x.
Since the length of a rectangle is twice its width, thus means that the length will be: = 2x
Perimeter of a rectangle = 2(l + w)
where,
L = length
W = width
Therefore,
Perimeter = 2(l + b)
36 = 2(2x + x)
36 = 2(3x)
36 = 6x
x = 36/6
x = 6
Width = 6 units
Length = 2 × Width = 2 × 6 = 12 units