kerjakan yang (A, B dan C)
Sertkan penjelasan!
Good luck
Sertkan penjelasan!
Good luck
Penjelasan dengan langkah-langkah:
soal 1
V = (π.r.r .t) /3
300π= (π. 10.10. t )/3
900π = 100π .t
t = 900π/100π
t = 9 cm
soal 2
V = (π.r.r .t) /3
120π = (π .r .r . 10)/3
360π = 10π . r. r
360π/10π = r.r
36 = r.r
r = 6cm
soal 3
L = (π. r. (r+s)
180π = (π . 8. (8+s)
180π = 64π. + 8πs
180π -64π = 8πs
116π = 8πs
s = 116π /8π
s =. 14.5
[tex]t = \sqrt{ {s}^{2} - {r}^{2} } \\ t = \sqrt{ {14.5}^{2} - {8}^{2} } \\ t = \sqrt{2120.5 - 64} \\ t = 12.1[/tex]
b
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