The radius of a semi circle is 35 cm then its perimeter is?  Choose the correct choice.
A) 32.8 B) 180 C) 32.1 D) 32.2 E) 32.9

Rationale: "diameter 70 cm 1 / 2 * 22 / 7 * 70 + 70 = 180 answer : b"
Answer: B