What is the approximate circumference of a semicircle with a diameter of 64 meters?

A.

100.48 m

B.

200.96 m

C.

401.92 m

D.

1607.68 m

Question

What is the approximate circumference of a semicircle with a diameter of 64 meters?
  
 
 

 
 

  

  A. 
 
100.48 m
   
   

 
 

  

  B. 
 
200.96 m
   
   

 
 

  

  C. 
 
401.92 m
   
   

 
 

  

  D. 
 
1607.68 m

anonymous · Answer

@amistre64

amistre64 · Answer

circumference of a semicircle,  seems to me to be half the circumference of the parent circle, plus the diameter line

amistre64 · Answer

other than that, you will have to better define the circumference of a semicircle

anonymous · Answer

what is the formula of circumference? @ikatouni

anonymous · Answer

$$2\pi r$$ right

amistre64 · Answer

2r = d

anonymous · Answer

so cof semi circle must be $$(2 \pi r)\div 2$$|dw:1401714942094:dw| |dw:1401714988315:dw|