The side of a rhombus is 24 m and length of one of its diagonals is 18 m. The area of the rhombus is?
Answers:	A) 410.47	B) 403.47	C) 420.47	D) 400.47	E) 300.47

Rationale: "area of the rhombus = 1 / 2 * p * √ 4 ( a ) 2 - ( p ) 2 a = 24 ; p = 18 a = 1 / 2 * 18 * √ 4 ( 24 ) 2 - ( 18 ) 2 = 1 / 2 * 18 * √ 2304 - 324 = 1 / 2 * 18 * √ 1980 a = 400.47 answer : d"
Answer: D