The area of a sector of a circle of radius 5 cm formed by an arc of length 4.5 cm is? Choose the correct choice from the following.
A) 8.78  B) 11.25  C) 8.75  D) 8.98  E) 8.28

Rationale: "( 5 * 4.5 ) / 2 = 11.25 answer : b"
Answer: B