No. 6 tolong dibantu pakai caranya ya...terima kasih☺

L daerah yang diarsir
= L1 - L2

L1 = 1/2 × d1 ×d2
= 1/2 × 10 × 20
= 1/2 ×200
= 100 cm

L2 = 1/2 × d1 × d2
= 1/2 × 8 × 10
= 1/2 × 80
= 40 cm

Luas daerah yg diarsir =
= Luas1 - Luas2
= 100 cm - 40 cm
= 60 cm.