tolong pakek cara ya kak

= luas KLQR + luas MNPQ
= [1/2 × (KR + LM + MQ) × KL] + [MQ × MO]
= [1/2×(26 + 12 + 12) × 12] + [12 × (38-KL)]
= (1/2 × 50 × 12) + [12 × (38-12)]
= (1/2 × 50 × 12) + (12 × 26)
= 300 + 312
= 612 cm^2

jawabannya C