Step-by-step explanation:
The circumference of Carlos' head is 22 inches. He want to but a cap. He must know the size of the cap. The formula of circumference of circular shaped object is given by :
r is radius of cap
or
Diameter of cap, D = 2 r = 7 inches
So, he must buy a cap that have diameter of 7 inches.
Sorry if the handwriting bothered you.
The answer is C because you have three points p to Q, Q to R the two different segments then the whole thing is P to R which is also a segment.