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Kelas : VI SD
1) V = Π x r² x t
160.160 = 22/7 x r² x 65
160.160 = 204,1 x r²
r² = 784
r = √784
r = 28 cm
Luas alas = Π x r²
= 22/7 x 28²
= 2.464 cm²
2) Luas alas = Π x r²
1.386 = 22/7 x r²
r² = 441
r = √441
r = 21 cm
Volume = Π x r² x t
41.580 = 22/7 x 21² x t
t = 41.580/1.386
t = 30 cm
3)
a) Luas alas = Π x r²
= 22/7 x 20²
= 1.256 cm²
b) Volume = Π x r² x t
= 22/7 x 20² x 50
= 62.800 cm³
Semoga terbantuu :)))