Ek lambi vritya belan ke Aadhar ki trijya 14 metre aur unchai 21 metre hai iska sampurn prasthiy kshetrafal kya hoga
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Answer:
pi.r^2 + pi.r^2 + 2.pi.r.h here r= radius, h= height
=2.pi.r(r+h)
= 2.(22/7).14.(14+21)
= 2.(22/7).14.35
=2.22.14.5=3080 Ans
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