We have two right triangles and three different rectangles.
The formula of an area of a right triangle:

l₁, l₂ - legs
We have l₁ = 20cm and l₂ = 21cm. Substitute:

The formula of an area of a rectangle:

l - length
w - width
We have:
rectangle #1: l = 22cm, w = 29cm

rectangle #2: l = 22cm, w = 21cm

rectangle #3: l = 22cm, w = 20cm

The total Surface Area of the triangular prism:

 
        
             
        
        
        
Answer:
Its 9
Step-by-step explanation:
 I did this in 5th grade... All you gotta do is count and there's 4 in the bottom aka 2 rows of 4 and there's 1 block on the top its 9
4+4+1=9
4+4=8
Add a 1 etc.
 
        
             
        
        
        
Answer:
-1
Step-by-step explanation:
Slope formula: (y₂ - y₁) / (x₂ - x₁)
= (2 - 1) / (1 - 2)
= -1
 
        
             
        
        
        
d)
First choice is an improper fraction because you can't have 22 ninths.
And the second two are just normal fractions, not wholes.
The first choice would be the right answer IF instead of writing it like that, it was written like this ( 2 4/9 )
Your answer is d).
 
        
                    
             
        
        
        
What is the equivalent of 1/50: fraction , in decimal form?
We can determine the equivalent values of the fraction 1/50
in one simple way. 
By dividing 1 and 50 to get the quotient of the digits
given.
<span><span>
1.  </span>1 / 50 =
0.02</span>
Therefore, 0.02 is the decimal form of the given fraction
1/50 and is a rational number.