The radius of a semi circle is 3.5 cm then its perimeter is?	Choose one
A) 32.8  B) 32.4  C) 32.1  D) 18  E) 32.9
18iameter = 7 cm   1/2 * 22/7 * 7+7= 
<gadget id="calculator">1/2 * 22/7 * 7+7</gadget>
<output>18</output>
18   Answer : 18
<result>D</result>
The radius of a semi circle is 3.5 cm then its perimeter is?