The radius of a semi circle is 6.3 cm then its perimeter is?  Choose the correct answer
A) 32.7
B) 32.4
C) 32.5
D) 32.9
E) 32.2
36/7 r = 6.3   =32.4   Answer: 32.4
<result>B</result>
The radius of a semi circle is 6.3 cm then its perimeter is?