Question

$\rm\dashrightarrow{Question:-}$


Refer to the Attachment.


$\rm\dashrightarrow{Note:-}$

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Answer 1

Answer:

As far as my documents are concerned, I cannot imagine that I will ever use the two kinds of arrows simultaneously. I wonder whether there was any rationale for having created a new macro rather than simply replaced the definition of the old one.

Answer 2

Refer the attachment for Detailed steps.

ANSWER

A) 900/π cm^2