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kel =
264=
264=2xxr
132=
924=22r
r=42 cm
luas =
= x 42 x 42
= 5544 cm²
264 cm = 2. 22/7 . r
264 cm . 7/22 = 2r
12 cm . 7 = 2r
84 cm = 2 pi.r
r = 42 cm
L= pi.r²
= 22/7 . (42)²
= 22/7 . 1764
= 22. 252 cm²
= 5544 cm²
(Mksh ^^)
K= 2. pi. r
L = pi. r²
(Maaf ada salah pengetikan)