Tolong di bantu ya. pakai cara..plisss
Jawaban Terkonfirmasi
1.
V kerucut = 1/3 × π × r² × t
= 1/3 × 3,14 × 5 × 5 × 13 cm³
= 340,16 cm³
2.
s = 39 cm
r = 30 : 2 = 15 cm
t² = s² – r²
t² = 39² – 15²
t² = 1521 – 225
t² = 1296
t = √1296
t = 36 cm
V kerucut = 1/3 × π × r² × t
= 1/3 × 3,14 × 15 × 15 × 36 cm³
= 8478 cm³
V 1/2 bola = 2/3 × π × r³
= 2/3 × 3,14 × 15 × 15 × 15 cm³
= 7065 cm³
V bandul = 8478 + 7065
= 15543 cm³
Jawaban Terkonfirmasi
1. Volume Kerucut = Luas alas x tinggi/3
Volume = 3,14 x 5 x 5 x 13/3
Volume = 340,167 cm³
2.
s² = r²+t²
t = √(s²-r²)
t = √(39²-15²)
t = √(1.521-225)
t = √1296
t = 36 cm
Volume kerucut = 3,14 x 15 x 15 x 36/3
Volume = 8.476 cm³
Volume 1/2 bola = 4/3 x 3,14 x 15 x 15 x 15/2
Volume = 7.065 cm³
Volume total = 8.476 cm³ + 7.065 cm³ = 15.546 cm³