Iwill award ! in the given figure, the reflex angle ∠dob has measure of 3.5y while the measure of ∠aod is y. find the measure of the non-reflex ∠dob in degrees. 3.5y is the measure of the reflex angle marked by the circular arc.

The measure of non-reflex ∠DOB is 108° and the measure of reflex ∠DOB is 252°.

Explanation:

It is given that the reflex angle ∠DOB has measure of 3.5y while the measure of ∠AOD is y.

From the given figure we can say that angle AOC and COB are supplementary angles and their sum is 180 because they are lies on a straight line.

Therefore the value of y is 72.

Therefore the reflex and is 252 degree.

The measure of non-reflex ∠DOB is,

Therefore, the  measure of non-reflex ∠DOB is 108° and the measure of reflex ∠DOB is 252°.

30

step-by-step explanation:

times by times

circumference divided by 3.141592654 then timesthe radius twice

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice