Question

The area of the parallelogram whose adjacent sides are `hat"i" + hat"k"` and `2hat"i" + hat"j" + hat"k"` is ______.

Options

• `sqrt(2)`

• `sqrt(3)`

• 3

• 4

Answer 1

The area of the parallelogram whose adjacent sides are `hat"i" + hat"k"` and `2hat"i" + hat"j" + hat"k"` is `sqrt(3)`.

Explanation:

Area of the parallelogram whose adjacent sides are `vec"a"` and `vec"b"` is `|vec"a" xx vec"b"|`.