Penjelasan dengan langkah-langkah:
k = 1/2πd
k = 1/2 × 22/7 × 42
k = 1/2 × 22 × 6
k = 11 × 6
k = 66 cm ( d )
K = π × D
K = 22/7 × 42
K = 22 × 42/7
K = 22 × 6
K = 132 cm
setengah lingkaran
132 × 1/2
132/2
= 66
opsi D
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Penjelasan dengan langkah-langkah:
k = 1/2πd
k = 1/2 × 22/7 × 42
k = 1/2 × 22 × 6
k = 11 × 6
k = 66 cm ( d )
K = π × D
K = 22/7 × 42
K = 22 × 42/7
K = 22 × 6
K = 132 cm
setengah lingkaran
132 × 1/2
132/2
= 66
opsi D