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Volume Bola
V = x x r³
904,32 = x 3,14 x r³
904,32 = x r³
r³ = 904,32 :
r³ = 904,32 x
r³ =
r³ = 216
r = ∛216
r = 6 cm
Luas seluruh bola
L = 4 x x r²
L = 4 x 3,14 x (6)²
L = 4 x 3,14 x 36
L = 3,14 x 144
L = 452,16 cm²
NOMOR 2
Volume Tabung
V = x r² x t
V = x (14)² x 15
V = x 196 x 15
V = x 2.940
V =
V = 9.240 cm³
Luas Tabung
L = 2 x x r (r + t)
L = 2 x x 14 (14 + 15)
L = 2 x x 14 x 29
L = x 812
L =
L = 2.552 cm²