Jawab:
198
Penjelasan dengan langkah-langkah:
rumus keliling lingkaran:
k = 2 × π × r
--------------
r = 21 (42 : 2)
k = 2 × 22/7 × 21
= 2 × 22 × 3
= 198
semoga membantu
jadikan jawaban tercerdass yaaaa
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Jawab:
198
Penjelasan dengan langkah-langkah:
rumus keliling lingkaran:
k = 2 × π × r
--------------
r = 21 (42 : 2)
k = 2 × 22/7 × 21
= 2 × 22 × 3
= 198
semoga membantu
jadikan jawaban tercerdass yaaaa