luas persegi = 28² = 784 cm²
luas 2 ¼O = ½ x 22/7 x14² = 308 cm²
luas yg diarsir = 784 - 308 = 476 cm²
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luas persegi = 28² = 784 cm²
luas 2 ¼O = ½ x 22/7 x14² = 308 cm²
luas yg diarsir = 784 - 308 = 476 cm²