A) 6

B) 10

C) 12

D) 15

E) 18

In the \(xy\) coordinate plane, how many points are at distance of exactly \(5\) units from the origin?

A) 1

B) 4

C) 8

D) 12

E) Strictly more than 12

A sphere of radius \(r\) is tangential to all 6 faces of a cube with side length \(s\). What is the volume of the sphere in terms of \(s\)?

A) \( \pi s^3 \)

B) \( \frac{1}{3} \pi s^3 \)

C) \( \frac{ 1}{6} \pi s^3 \)

D) \( \frac{ 1}{8} \pi s^3 \)

E) \( \frac{4}{3} \pi s^3 \)

A) \( 30 ^ \circ \)

B) \( 45 ^ \circ \)

C) \( 60 ^ \circ \)

D) \( 90 ^ \circ \)

E) \( 180 ^ \circ \)

A) 100

B) 400

C) 525

D) 600

E) 625

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