yang tau tolong ya..

L = (JSS x t ): 2
= ((5+6) x 4) :2
= (11 x 4 ) : 2
= 44 : 2
= 22 m²


2 m² = 1 kg

22 m² : 2 m² = 11 kg

L = ½ × (a + b) × t
= ½ × (5 + 6) × 4
= ½ × 11 × 4
= 22 m²

cat yg diperlukan
= 22 m² ÷ 2 m²
= 11 kg (A)