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154 = 4 x 22/7 x r²
r² = (154 x 7)/88
= 49/4
r = 7/2
V bola = 4/3 x 22/7 x 7/2 x 7/2
= 4/3 x 11 x 7/2
= 154/3
= 51,33 cm³