If the height of a right cone C is 3 and the diameter of the base of C is 8, what is the distance from the apex of C to any point on the circumference of the base of C?  Pick one:  A) 3 √ 2  B) 5  C) 5 √ 2  D) √ ( 67 )  E) √ ( 73 )

Rationale: height of cone = 3 radius of base = 4 so the distance from the apex of c to any point on the circumference of the base of c will be a right angled triangle hence the distance is sqrt ( 3 ^ 2 + 4 ^ 2 ) = 5 answer : b
Answer: B