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A field roller, in the shape of a cylind...

A field roller, in the shape of a cylinder, has a diameter of 1 m and length of a `1 1/4` m. If the speed at which the roller rolls is 14 revolutions per minute, then the maximum area (in `m^2`) that it can rollin 1 hour is : (take `pi=22/7`)
एक बेलनाकार फील्ड रोलर का व्यास 1 मीटर लंबाई और लंबाई `1 1/4` मीटर है। रोलर यदि एक नियमित गति से प्रति मिनट 14 चक्कर लगाता है, तो उसी गति से एक घंटे में यह रोलर अधि कतम कितना क्षेत्रफल (मीटर वर्ग में) समतल करेगा? (`pi=22/7` लीजिए)

A

3560

B

3300

C

3600

D

3960

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