Answer:
1.908
Step-by-step explanation:
Assuming you are going at a base of 10,
㏒81 = 1.908, just use a calculator
 
        
             
        
        
        
The answer to the question is c. 70°
        
             
        
        
        
The width is half the length, so is
  width = (1/2)*length
  width = (1/2)*(<span>3.2a + 0.18b) cm
  width = (1.6a +0.09b) cm
The perimeter of the rectangle is twice the sum of length and width.
  perimeter = 2*(length + width)
  perimeter = 2*((3.2a +0.18b) cm + (1.6a +0.09b) cm)
  perimeter = 2*(4.8a +0.27b) cm)
  perimeter = (9.6a +0.54b) cm
Sasha did not get this answer, so apparently ...
  her reasoning was not correct.</span>
        
             
        
        
        
C represents Celsius and F represent Fahrenheit.
Hope this helps!