Find the surface area of a 7.4 cm long iron rod of 3.1 cm radius
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Answer:
202.84
Step-by-step explanation:
surface area of cylinder =2*22/7*3.1(3.1+7.4)
=2*22/7*3.1(10.5)
=2*22/7*32.55
=2*22*4.65
=44*4.61
=202.84
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