Find the area of triangle with vertices A(1,1,0), B(3,2,1), C(2,4,2).

Question

G1 Physics · Accepted Answer

AB=2î+ĵ+k̂, AC=î+3ĵ+2k̂. AB×AC=−î−3ĵ+5k̂, magnitude=√35. Triangle area=√35/2.