The radius of a semi circle is 6.3 cm then its perimeter is?	Choices.
A) 32.7 B) 32.4 C) 22.4 D) 32.8 E) 32.1
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?