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dit : L dan kll lingkaran = ..
cm² dan ... cm
jawab :
L = π r²
= 3,14 × 13²
= 3,14 × 169
= 530,67 cm²
Kll = 2πr
= 2 × 3,14 × 13
= 3.14 × 26
= 81,64 cm
= 3,14 x 13²
= 3,14 x 169
= 530,67 cm²
Kliling = 2 x π x r
= 2 × 3,14 × 13
= 3.14 × 26
= 81,64 cm