Tolong dijawab pliss

Diketahui:
r kerucut = r tabung = r bola = 7 cm
t kerucut = 21 cm
t tabung = t kerucut + 2 r bola = 21 + 14 = 35 cm

Ditanyakan:
V tabung, V kerucut, V bola

Jawab:
Mencari V tabung
V = π × r² × t
V = 22/7 × 7² × 35
V = 154 × 35
V = 5.390 cm³

Mencari V kerucut
V = 1/3 × π × r² × t
V = 1/3 × 22/7 × 7² × 21
V = 1/3 × 154 × 21
V = 1.078 cm³

Mencari V bola
V = 4/3 × π × r³
V = 4/3 × 22/7 × 7³
V = 4/3 × 1.078
V = 1.437,33 cm³

Diket: tk= 21
r= 7

vt= πr²t
= 22/7.7.7.35
= 22.7.35
= 5390 cm³

vk= 1/3πr²t
= 1/3.22/7.7.7.21
= 22.7.7
= 1078

vb= 4/3.πr³
= 4/3.22/7.7.7.7
= 4/3.22.7.7
= 1437,33 cm³

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