Keliling persegi panjang =
2 x p + l =
2 x 30 cm + 14 cm =
60 cm + 14 cm =
74 cm.
Keliling ½ lingkaran =
½ x π x d =
½ x 22/7 x 14 = 22 cm.
Keliling bangun gabungan =
Keliling persegi panjang + keliling ½ lingkaran =
74 cm + 22 cm =
•96 cm (C).
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Keliling persegi panjang =
2 x p + l =
2 x 30 cm + 14 cm =
60 cm + 14 cm =
74 cm.
Keliling ½ lingkaran =
½ x π x d =
½ x 22/7 x 14 = 22 cm.
Keliling bangun gabungan =
Keliling persegi panjang + keliling ½ lingkaran =
74 cm + 22 cm =
•96 cm (C).