Answer:
The answer is b.
Step-by-step explanation:
if you look up what a ray is, it will look like the description b has.
Step 1: Write out the formula

Step 2: Write out the given values and substitute them into the formula

Therefore,

Hence, the area in terms of pi is

The last choice is the correct answer
Um, I'd say discrete because it's not important. I'd never say it's continuous.
Answer: 19.5
Step-by-step explanation:
Use Pythagorean theorem to find the diagonal as it is a right triangle.