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Luas Lingkaran = 1/4 . π . d²
(1)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 25²
L = 1/4 . 3,14 . 625
L = 490,625 cm²
(2)
L = 1/4 . π . d²
L = 1/4 . 22/7 . 21²
L = 1/4 . 22/7 . 441
L = 346,5 cm²
(3)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 40²
L = 1/4 . 3,14 . 1600
L = 1256 cm²
(4)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 55²
L = 1/4 . 3,14 . 3025
L = 2374,625 cm²
(5)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 80²
L = 1/4 . 3,14 . 6400
L = 5024 cm²
(6)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 30²
L = 1/4 . 3,14 . 900
L = 706,5 cm²
(7)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 75²
L = 1/4 . 3,14 . 5625
L = 4416,625 cm²
(8)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 60²
L = 1/4 . 3,14 . 3600
L = 2826 cm²
(9)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 92²
L = 1/4 . 3,14 . 8464
L = 6644,24 cm²
(10)
L = 1/4 . π . d²
L = 1/4 . 3,14 . 100²
L = 1/4 . 3,14 . 10000
L = 7850 cm²