Question

$\underset{0}{\overset{20\pi }{\int }}(|\sin x|+|\cos x|{)}^{2}dx$ is equal to

• A. $10(\pi +4)$
• B. $10(\pi +2)$
• C. $20(\pi -2)$
• D. $20(\pi +2)$

Answer 1

Answer: (D)

Correct answer is (d) $20(\pi +2)$