L = 1256
r^2 = 1256 x 7/22
r^2 = 400 (pembulatan)
r = 20 cm.
K = π x 40 = 3,14 x 40 = 125,6 cm.
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L = 1256
r^2 = 1256 x 7/22
r^2 = 400 (pembulatan)
r = 20 cm.
K = π x 40 = 3,14 x 40 = 125,6 cm.