Jawaban:
b. 51,4 cm
Penjelasan dengan langkah-langkah:
Keliling= panjang busur + diameter
Keliling= 1/2 × 3,14 × 20 cm + 20 cm
= 3,14 × 10 cm + 20 cm
= 31,4 cm + 20 cm
= 51,4 cm
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Jawaban:
b. 51,4 cm
Penjelasan dengan langkah-langkah:
Keliling= panjang busur + diameter
Keliling= 1/2 × 3,14 × 20 cm + 20 cm
= 3,14 × 10 cm + 20 cm
= 31,4 cm + 20 cm
= 51,4 cm