The side of a rhombus is 22 m and length of one of its diagonals is 16 m. The area of the rhombus is?	Choose the correct choice from the following
A) 327.9 B) 325.9 C) 347.7 D) 357.9 E) 327.9

Rationale: "area of the rhombus = 1 / 2 * p * √ 4 ( a ) 2 - ( p ) 2 a = 22 ; p = 16 a = 1 / 2 * 16 * √ 4 ( 22 ) 2 - ( 16 ) 2 = 1 / 2 * 16 * √ 1936 - 256 = 1 / 2 * 16 * √ 1680 a = 327.9 answer : a"
Answer: A