10 DM = 100 cm
1. K = π x 2 x r
= 3,14 x 2 x 100
= 3,14 x 200
= 628 cm
2. K = π x d
= 22/7 x 21
= 22 x 3
= 66 cm
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10 DM = 100 cm
1. K = π x 2 x r
= 3,14 x 2 x 100
= 3,14 x 200
= 628 cm
2. K = π x d
= 22/7 x 21
= 22 x 3
= 66 cm
semoga membantu^^