Question

72nd question.........l

Answer 1

Hey dear
Here is your answer

Answer 2

hello friend...!!

• According to the question, we should calculate the area of the parallelogram

• The given vectors are
A= 2i +3j
B = i + 4j

$area \: of \: parallelogam \: = |a \times b|$

therefore, the cross product of A x B is

( 2i + 3j) x ( i + 4j )

equals to,

i ( 0-0) -j (0-0) +k (8-3)

implies,

area = 0i -0j +5k

the magnitude of the area 5 sq units.

therefore option ' D ' is the correct answer.

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the attached picture gives you the cross product

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Hope it helps..!!