Kell lingkaran besar = π.d ÷ 2 = 3,14.16÷2 = 25,12 cm
Kell lingkaran kecil = π.d ÷ 2 = 3,14.8 ÷ 2 = 12,56 cm
Kell diarsir = 25,12+12,56+8=45,68 cm
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Kell lingkaran besar = π.d ÷ 2 = 3,14.16÷2 = 25,12 cm
Kell lingkaran kecil = π.d ÷ 2 = 3,14.8 ÷ 2 = 12,56 cm
Kell diarsir = 25,12+12,56+8=45,68 cm