Pakai cara ya kak besok dikumpulin ;)

Segitiga (1)
L = 1/2 × a × t
L = 1/2 × 5 × 6
L = 15cm

Persegi Panjang (2)
L = P × L
L = 6 × 4
L = 24cm

Persegi Panjang (3)
L = P × L
L = 10 × 3
L = 30cm

Luas total= 15+24+30 = 69cm