The radius of a semi circle is 70 cm then its perimeter is?  Choose the correct choice from the following answers.
A) 32.8
B) 32.4
C) 360
D) 32.2
E) 32.9

Rationale: "diameter = 140 cm 1 / 2 * 22 / 7 * 140 + 140 = 360 answer : c"
Answer: C