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K = 44 cm
maka :
K = 2 x π x r
44 = 2 x 22/7 x r
44 = 44/7 x r
r = 44x7 / 44
r = 7 cm
jdi :
L = π x r²
= 22/7 x 7²
= 154 cm²
diameter = 44/22/7
diameter = 44 x 7/22
diameter = 14 cm
jari" = 7 cm
Luas lingkaran = 22/7 x 7 x 7
Luas lingkaran = 154 cm^2