keliling bangun berikut adalah

Keliling Persegi Panjang :
K = l + l + p
K = 22 + 22 + 28
K = 44 + 28
K = 72 cm

Keliling Setengah Lingkaran :
K = ½πd
K = ½ × 22/7 × 28
K = ½ × 22 × 4
K = ½ × 88
K = 44 cm

Keliling Bangun :
K = 88 cm + 44 cm
K = 132 cm

Maaf Kalau Salah

28 : 2 = 14 X [tex] \frac{22}7} [/tex]
14 X [tex] \frac{22}{7} [/tex] = 44
22 + 22 + 24 + 24 = 92 - 44 = 136