Tolong jawab secepatnya

1.
K = 3/4 × 22/7 × 10,5 × 2
K = 49,5 cm

2.
K = 2 × (¾ × 3,14 × 40)
K = 2 × 94,2
K = 188,4 cm

3.
K = 14 + (28 - 7) + (¼ × 22/7 × 28) + (¼ × 22/7 × 14)
K = 14 + 21 + 22 + 11
K = 68 cm

4.
K = (22/7 × 14) + (¼ × 22/7 × 28)
K = 44 + 22
K = 66 cm

itu semua keliling arsir yaaa
semoga membantu :)