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1/2 x 22/7 x 7 x 7 x10
770cm³
vol tabung setelah dimasukan bola
= 3/4 x luas alas x tinggi
3/4 x 22/7 x 7 x 7 x10
1155cm³
jadi vol bola 1155 - 770 = 385cm³
maaf kalo salah