What is the area of a triangle whose vertices are at (3, -1, 2), (1,- 1 , -3) and (4, -3, 1)?

### Question Asked by a Student from EXXAMM.com Team

Q 2319167019.     What is the area of a triangle whose vertices are at
(3, -1, 2), (1,- 1 , -3) and (4, -3, 1)?
NDA 2010 Paper 1
A

(sqrt (165))/2 sq units

B

(sqrt (135))/2 sq units

C

4 sq unit

D

2 sq unit

#### HINT

(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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