Answer:
B.30
Step-by-step explanation:
∠APD = 1/2 (AD - BC) = 1/2 (130 - 70) = 1/2 * 60 = 30
AB + BC + CD + DA = AB + BC + CD + AD = 80 + BC +80 +130 = = 360
80 + BC +80 +130 = 360
BC = 70
