Question

Calculate the area of a triangle whose vertices are given by (3, -1, 2), (1, -1, 2)

and (4, -2, 1).​

Answer 1

Answer:

√2 sq. unit

Step-by-step explanation:

Area of ΔABC = 1/2|AB * AC|

= 1/2|2/√2|

= √2 square unit.