hai teman teman tolong yaaa mtk dibantu pke caranya 30-32

30. k. persegi panjang = 21 + 32 + 21 = 74 cm
k. lingkaran = 1/2 × phi × d
= 1/2 × 22/7 × 21
= 33 cm
74 + 33 = 107 cm tp disitu gaada 107 adanya 108

31. k. persegi panjang = 2 × (p + l)
= 2 × (34 + 28)
= 2 × 62
= C. 124 cm

32. l. trapesium = (a+b) × t ÷ 2
a = 7 cm, b = 13 cm, t = 4 cm
= (7+13) × 4 ÷ 2
= 20 × 4 ÷ 2
= 40 cm
l. persegi panjang = p × l
p = 7 cm, l = 7 cm
= 7 × 7
= 49 cm
40 + 49 = D. 89 cm2

maaf kalo salah semoga membantu