juniorthefinessekid
juniorthefinessekid
10-05-2017
Mathematics
contestada
Someone please help me
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emskybaby3223
emskybaby3223
10-05-2017
so 4*9=36 then you multiply by pi which is 36*3.14=113.04 and then you round it and you will find your answer
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fussellk
fussellk
10-05-2017
Use the formula:
A = 2 x pi x r x h + 2 x pi x r^2
=2 x 3.14 x 4 x 9 + 2 x 3.14 x 4^2
=326.6
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