Answer:
Option 3 is right
68 is the answer.
Explanation:
Given is a circle with some points A, B, C, D and E
We have to find measure of arc DE
We find that angle of arc DE = angle DOE
and angle of arc DC = DOC =112
DOE and DOC are supplementary angles since they form a linear pair on the straight line EOC
Hence angle DOE = 180-112 = 68
Thus angle of arc DE is the angle that DE subtends at the centre of circle =
DOE = 68
Option 3 is correct