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How much iron sheet (in m^2) will be ne...

How much iron sheet (in `m^2`) will be needed to construct a rectangular tank measuring 10m × 8m × 6m , if a circular opening of radius one metre is to be left at the top of the tank? (correct to one decimal place)
10 मीटर 8 मीटर 6 मीटर विमाओं वाले आयताकार टैंक के निर्माण के लिए लोहे की कितनी शीट (वर्ग मीटर में ) की आवश्यकता होगी, अगर एक मीटर त्रिज्या वाला वृताकार मुख टैंक के शीर्ष पर छोड़ा जाना है?

A

371.6

B

370.4

C

372.9

D

370.8

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