Sebuah jam dinding berbentuk lingkaran memiliki jari-jari 20,4 cm. Tentukan keliling jam dinding berbentuk lingkaran tersebut!
Jawaban:
128,112 cm²
Penjelasan dengan langkah-langkah:
3,14 x r x 2
= 3,14 x 20,4 x 2
= 3,14 x 40,8
= 128,112 cm²
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Jawaban:
128,112
Penjelasan dan langkah - langkah :
Rumus keliling : π × d / π × 2 × r
Diket : Jari² = 20,4
Diameter = 20,4 × 2 = 40,8
Dit : keliling?
jawab : • π × d
= 3,14 × 40,8
= 128,112
• π × 2 × r
= 3,14 × 2 × 20,4
= 6,28 × 20,4
= 128,112
