tlng ya bantu aku..aku udh psing bgt..pakai cara,tpi caranya jangan asal

maaf no 28 ngk bisa jawab...

26.) d = 42, r = 21
L = phi × r^2. karena itu setengah lingkaran
jadi, L = 1/2 × phi ×r^2
L = 1/2 × 22/7 × 21^2
L = 1/2 × 1386
L = 693 cm^2 (Jawaban A)

27.) p = 32, l = 18, V = 1728
V = p×l×t
1728 = 32 × 18t
1728 = 576t
1728/576 = t
3 = t (Jawaban C)