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L = 3,14 x 14 x 14
keliling 3,14 x 28
SD Kelas VI
D = 28
r = D/2 = 28 cm / 2 = 14
Keliling = 2.π.r
= 2 x 22/7 x 14
= 2 x 22 x 2
= 88 satuan panjang
Luas = π.r²
= 22/7 x 14 x 14
= 22 x 2 x 14
= 616 satuan luas
Keliling = 88 satuan panjang
Luas = 616 satuan luas
Jari-jari = 14 satuan panjang