Circle O is shown. Line segments C O And A O are radii. Lines are drawn from points C and A to point B to form chords B C and B A. Angle C B A is 80 degrees. What is the measure of angle COA?

∠COA = 160°

Step-by-step explanation:

The angle intercepted on opposite side of the circle from an ARC has a measure of HALF of the Arc.

∠CBA is HALF of the ARC CA

∠CBA is given as 80°

So Arc CA is 80 * 2 = 160°

Now,

∠COA is an intercepted angle that is at the CENTER. This angle has same measure as the Arc it is intercepted from (Arc CA).

Hence,

∠COA = Arc CA

∠COA = 160°

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.