Sebatang pipa berbentuk tabung dengan panjang 14 m. Jika keliling alasnya 25 1/7 dan Π = 22/7 volume pipa tersebut adalah... a. 0,0704 m^3 b. 0,704 m^3 c. 0,1408 m^3 d. 1,408 m^3
Sharla11
Dik t = 14 m K alas = 25 1/7 m π = 22/7 V = ? alas tabung = lingkaran K alas = 2 . π .r 25 1/7 = 2 .22/7 . r 25 1/7 = 44 / 7 .r r = (25 1/7) / 44/7 r = ( 176/7 ) . 7 /44 r = 4 cm
maka V = π.r^2 . t V = 22/7 .4^2. 14 V = 22/7 . 16 . 14 V = 704 m3
t = 14 m
K alas = 25 1/7 m
π = 22/7
V = ?
alas tabung = lingkaran
K alas = 2 . π .r
25 1/7 = 2 .22/7 . r
25 1/7 = 44 / 7 .r
r = (25 1/7) / 44/7
r = ( 176/7 ) . 7 /44
r = 4 cm
maka
V = π.r^2 . t
V = 22/7 .4^2. 14
V = 22/7 . 16 . 14
V = 704 m3