Quiz (1/5)Menggunakan cara ✓No ngasal ✓ No bahasa alien ✓​

Jawaban:

Keliling ½ lingkaran = ½ × π × D

= ½ × 22/7 × 70

= 11/7 × 70

= 11 × 10

= 110 cm

Keliling bangun datar = 110 + 70 + 100 + 100

= 180 + 100 + 100

= 280 + 100

= 380 cm