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v = πr²t
4840 = 22/7 x r² x 14
4840 = 22 x r² x 2
4840 = 44 x r²
r² = 4840/44
r = √110
r = 10,48 cm
LP = 2πrt
LP = 2 x 22/7 x 10,48 x 10,48 x 14
LP = 44 x 10,48 x 10,48 x 7
LP = 33827.7632 cm²