plis jwb bsok di kumpul

NOMOR 3
L1 = a × t
L1 = 25 cm × (39–22) cm
L1 = 25 cm × 17 cm
L1 = 425 cm²

L2 = p × l
L2 = 25 cm × 22 cm
L2 = 550 cm²

Luas Gabungan
L = L1 + L2
L = 425 cm² + 550 cm²
L = 975 cm²

NOMOR 4
L1 = p × l
L1 = 42 cm × 30 cm
L1 = 1.260 cm²

L2 = ½ × a × t
L2 = ½ × 30 cm × (59–42) cm
L2 = ½ × 30 cm × 17 cm
L2 = 225 cm²

Luas Gabungan
L = L1 + L2
L = 1.260 cm² + 225 cm²
L = 1.515 cm²

NOMOR 5
L1 = p × l
L1 = 44 cm × 43 cm
L1 = 1.892 cm²

L2 = ½ × (a+b) × t
L2 = ½ × (15 cm + 43 cm) × (62 cm – 44 cm)
L2 = ½ × 58 cm × 18 cm
L2 = 522 cm²

Luas Gabungan
L = L1 + L2
L = 1.892 cm² + 522 cm²
L = 2.414 cm²