Math

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I don't understand how u can get 3454 from mutiplying 1,100(3.14)
When i did it i got 1414 The question: is 2(3.14r2 + 2(3.14)rh 2(3.14)(10)2 + 2(3.14)(10)(45) and when i got done with the promblem the answer in book said approximately 3454in2 when i got 1414 from adding and i even got a bigger number buy multiply

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