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tabung pertama phi . 5 . 5. 30 = 2355
selisih = 2355-1130,4 = 1224,6
1224,6 ÷ 3,14 = 390 phi
jawabannya d
d1 = tinggi tabung kedua = 10, jadi r1 = 10/2 = 5
t1 = 3tinggi tabung kedua = 3(10) = 30
r2 = d2/2 = 12/2 = 6
t2 = 10
Dit :
Selisih kedua volume
Jwb =
V1 = πr2t
= π × 5 × 5 × 30
=750π
V2 = πr2t
= π × 6 × 6 × 10
= 360π
Selisih volume kedua tabung = Volume tabung I - Volume tabung II
= 750π - 360π
= 390π