1.

Area of rhombus is ......., where diagonals are a=2hat(i)-3hat(j)+5hat(k) and b=-hat(i)+hat(j)+hat(k)

Answer»

`SQRT(21.5)`
`sqrt(31.5)`
`sqrt(28.5)`
`sqrt(38.5)`

SOLUTION :GIVEN diaglonals of arhombus are
`a=2hati-3hatj+5hatk" and"b=-hati+hatj+hatk`
`:.""` AREA of RHOMBUS `= 1/2|axxb|`
`=1/2|-8hati-7hatj-hatk|=1/2sqrt(114)=sqrt(28.5)`


Discussion

No Comment Found

Related InterviewSolutions