pi·18.6^2·123°/360° - 1/2·18.6^2·SIN(123°) = 226.3
 
        
             
        
        
        
Answer: Lenayah's presentation was 12 minutes long. 
Step-by-step explanation:
- Set up a proportion. 2/3 = 8/x. 
- Cross multiply. 2x = 24
- Divide both sides by 2. x =12
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
Bbbbbbbbbbbbbbbbbbbbbbbbbb
 
        
                    
             
        
        
        
Answer:



Step-by-step explanation:
Given
<em>Decimal Grid = Hundredths</em>



To solve for each:
We have:
For Amber:


For Grace:




This means that Grace shaded 60 of the hundredth models.
Decimal shaded is:



For Marsha:




Multiply this by 100, to get the number of shaded


This means that Marsha shaded 170 of the hundredth models.
Decimal shaded is:


 
        
             
        
        
        
Answer:
Naman is 12 years old
Step-by-step explanation:
This means his sister is 3 which means in 20 years Naman will be 32 and his sister will be 23. Double 23 and you get 46 and 46 - 32 is 14