D=14cmk=π×dk=22/7×2 =…….cmd=42cmk=π×dk=22/1×6=…….​

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D=14cmk=π×dk=22/7×2 =…….cmd=42cmk=π×dk=22/1×6=…….​

d = 14 cm

k = π × d

k = 22/7 × 14

k = 44 cm

d = 42 cm

k = π × d

k = 22/7 × 42

k = 132 cm

Note:

K = π × d adalah rumus mencari keliling lingkaran.

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