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V = 1440 cm³
D1 = 12
D2 = 16
mk :
Lalas = (D1XD2)/2
= (12x16)/2
= 96 cm²
sisi² = (1/2D1)² +(1/2d2)²
sisi² = (1/2 x 12)²+ (1/2 x 16²)
sisi = √36+64
sisi = 10 cm
Kalas = 4 x sisi
= 4 x 10
= 40 cm
V = Lalas x t
1440 = 96 x t
t = 1440 / 96
t = 15 cm
Lp = (2xL alas) + (K alas x t)
= (2x96) + (40x15)
= 192 + 600
= 792 cm²