The perimeter of a semi circle is 140 cm then the radius is?	Choose the correct choice:	A) 27	B) 28	C) 19	D) 11	E) 12
36/7 r = 140 =&gt; r   = 27   27nswer: 27
<result>A</result>
The perimeter of a semi circle is 140 cm then the radius is?