Its way too small i cant see the question.
Answer:
Have you done the previous parts? I need the answer to those to do C
Answer:
(D)

Step-by-step explanation:
Given T(-2,4,7) and M(-3,5,2)
where m and t are position vectors. 
Given v=<x,y,z>, then the magnitude of v is:

Answer: 78.5
Step-by-step explanation:
Well i said 78.5 to get the radius you have to divide the diameter by 2 to get your answer but you have to make and the area might be 78.5 because thats what we do in my grade which is 7th