Answer:
measure of arc ADC = m∠CPD + m∠DPA = 186
Explanation:
As this is the circle P, so that we have:
+) m∠APB + m∠BPC + m∠CPD + m∠DPA = 360 degree
=> 70 + 104 + m∠CPD + m∠DPA = 360
=> m∠CPD + m∠DPA = 360 - 70 - 104 = 186
As P is the center, so that we have:
+) measure of arc AD = m∠APD
+) measure of arc DC = m∠CPD
+) measure of arc BC = m∠BPC
+) measure of arc AB = m∠APB
As D is on arc AC, so that:
measure of arc ADC = measure of arc AD + measure of arc DC
=> measure of arc ADC = m∠CPD + m∠DPA = 186