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The adjacent side of parallelogram is represented by vectors 2i + 3j and i + 4j. The area of the parallelogram is

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5 units

3 units

8 units

11 units

answer is A.

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Detailed Solution

.
Let a = 2i + 3j and b = i + 4j.
Area of parallelogram =

|a \times b|

= |(2i + 3j)

\times

(i + 4j)| = |5k| = 5 units
So, Option 1 is correct.

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