Answer:
(2l + 2w) + (a + b + c)
Step-by-step explanation:
The formula for the perimeter of a rectangle is 
P = 2l + 2w
so if you substitute, it becomes
P = 2(12) + 2(2)
= 24 + 4
= 28
For the perimeter of a triangle the correct formula would be 
P = a + b + c
The missing side in the triangle is 3 because 15 - 12 is 3. 
If you substitute, it becomes
P = 2 + 3 + 6
P = 11
If we add both perimeters together we get the full perimeter of the figure which is 
28 + 11 = 39
I am not sure if you wanted the answer as well but just in case :)
 
        
             
        
        
        
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Answer:
Radiant energy is the energy of electromagnetic waves.
Step-by-step explanation:
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Answer:
64 points/80 points
80/100
Step-by-step explanation:
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