Question

find the area of the parallelogram with adjacent sides formed by P and Q. Where P Vector = 2 i Cap + 3 j Cap + 4 K Cap and Q Vector = 3 i Cap + 2 j Cap - 2 k Cap.​​

Answer 1

Explanation:

area of parallelogram=| P vector× Q vector |

= (2i+3j+4k)×(3i+2j-2k)

= i. j. k.

2. 3. 4

3. 2. -2

i(-6-8)-j(-4-12)+k(4-9)

-14i+16j-5k

|-14i+16j-5k|= √(196+256+25)=21.8 unit sq