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= 4/3πr³ + 1/3πr²t
= 1/2 ×22/7 ×4/3×7×7×7 + 1/3×22/7×7×7×35
= 359,33 + 1.796,66
= 2.155,99
t=35
Volume bandul
=Volume½bola + Volume kerucut
=⅔πr³ + ⅓πr²t
=⅓πr² (2r+t)
=⅓ . 22/7 . 14 . 14 ( 2.14 + 35)
=⅓ . 616 (63)
=12936 cm³