3\4 dsri volume tabung yang diameternya 7 dan tingginya 28 adalah .........cm3

Penyelesaian :
V tabung
= phi×r2×t
= 22/7×3,5×3,5×28
= 1078 cm3

V 3/4 tabung
= 3/4 × V tabung
= 3/4 × 1078cm3
= 808,5 cm3

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Mapel : Matematika
Tentang : Bangun Ruang
Pembahasan :

Diketahui :
- d = 7 cm
- t = 28 cm

Ditanya :
- 3/4 dari V

V = πr²t
V = ¼ x 22/7 x 7 x 7 x 28
V = 22/7 x 7 x 7 x 7
V = 22 x 7 x 7
V = 154 x 7
V = 1078 cm³

[tex] \frac{3}{4} \times 1078 = 808.5[/tex]

Jawaban : 808,5 cm³

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