Answer:im pretty sure its 2 then you can watch an ad for another answer
Step-by-step explanation:
 
        
                    
             
        
        
        
3. ΔPQR ≅ ΔSRT
3. ASA  (Angle - Side - Angle) - we have two triangles where we know two angles and the included side are equal
If two sides and the included angle of one triangle are equal to the corresponding sides and angle of another triangle, the triangles are congruent. 
4. PR ≅ SR
4. ΔPQR ≅ ΔSRT - the corresponding sides are congruent.
 
        
             
        
        
        
Answer:
The answers are  and
 and  .
.
Step-by-step explanation:
Proportions are fractions that can be made by using the given numbers, which in this case are 2, 5, 8, and 20. Let's pair each one with the other three and then simplify if possible.
First, let's begin with 2:



Then, let's do 5:



Note that we already have  , so we do not need to include an additional one.
, so we do not need to include an additional one.
Now, let us do 8:



See how we already have  , so we won't have to include that as well.
, so we won't have to include that as well.
Finally, let's do 20:



Now see that we already have both  and
 and  , so we won't have to include both of them, as they are both extras.
, so we won't have to include both of them, as they are both extras.
Hence, the answers are  and
 and  .
.
<h2><u><em>
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The formula for the area of a square of side s is A = s^2.
Then s^2 = A, and s = +√A.
Here, the approx. side length is s = +√(75 m^2), or 8.7 m