$\int_{0}^{20 \pi}(|\sin x|+|\cos x|)^{2} d x$ का मान ज्ञात कीजिए।

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

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