AnswerR
13
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
20
Step-by-step explanation:
The area of a circle is equal to pi*radius^2
We can then write this as 
314.1592=π*r^2
We then divide pi to get 
100=r^2
take the square root and you find that the radius equals around 10
The diameter is always equal to the radius times two which means that the diameter is 20
hope this helps
 
        
             
        
        
        
Answers:
14 + 18 ÷ 2 x 18 – 7 = 169
- 14 + 9 * 18 - 7
 - 14 + 162 - 7
 - 169
 
60 – 9 x 8 ÷ 8 x 6 = 6
- 60 - 72 / 8 * 6
 - 60 + -216/4
 - 60 - 54
 - 6
 
15 x 10 + 12 ÷ 3 + 9 = 163
- 150 + 12 / 3 + 9 
 - 150 + 4 + 9
 - 163
 
(10 ÷ 5)3 + 100 – 9 x 11 = 7
- 2 * 3 + 100 - 9 * 11
 - 6 + 100 - 99
 - 7
 
8 x 4 + 9 – 9 + 18 = 50
- 32 + 9 - 9 + 18
 - 41 - 9 + 18
 - 32 + 18 
 - 50
 
3 x 8 x 2 – 42 + 5 = 11
- 24 * 2 - 42 + 5 
 - 48 - 42 + 5 
 - 11
 
<em>i hope this helps, good luck :)</em>