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luas bangun yang kecil= 2×s×s=2×5×5=50
luas bangun yang diarsir= 280-50=230
keliling= 9+9+15+15=48
Keliling 2 = 2 x (4 x 5) = 2 x 20 = 40 cm
Keliling yang diarsir = 66 cm - 40 cm = 26 cm
Luas 1 = 20 x 14 = 280 cm²
Luas 2 = 2 x (5 x 5) = 2 x 25 = 50 cm²
Luas yang diarsir = 280 cm² - 50 cm² = 230 cm²