jawab salah satu nomor yg ada digambar in!!!

1.3,14×10=31,4cm

2.22/7×21=66cm

3.1/2×22/7×28=44cm

Semoga membantu....

1. K = π × Diameter
= 3,14 × 10 = 31,4
2. K = π × Diameter
= 22/7 × 21 = 66
3. K = π × Diameter
= 22/7 × 28 = 88
jumlah seluruh = 185,4
jika dibulatkan = 185
semoga membantu.