The perimeter of a semi circle is 162 cm then the radius is?
Choose the correct choice:
A) 31.5	B) 28	C) 98	D) 37	E) 13
36/7 r = 162   =&gt; r   = 31.5   31.5nswer: 31.5
<result>A</result>
The perimeter of a semi circle is 162 cm then the radius is?