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Garis panjang + 2 x garis pendek + 3 x 1/2 keliling lingkaran
Dengan:
Garis panjang:
3 x 28 = 84 cm
2 Garis pendek:
14 + 14 = 28 cm
3 x 1/2 keliling lingkaran:
Memiliki jari-jari = 14 cm
Sehingga,
K = 84 + 28 + 3/2 x 2πr
K = 112 + 3πr
K = 112 + 3 x 22/7 x 14
K = 112 + 3 x 22 x 2
K = 112 + 132
K = 244 cm