The perimeter of a semi circle is 144 cm then the radius is?  Choose the correct choice from the following answers
A) 22 B) 28 C) 97 D) 26 E) 12
36/7 r = 144 =&gt; r   = 28   Answer:28
<result>B</result>
The perimeter of a semi circle is 144 cm then the radius is?