A company makes chocolate candies in the shape of a solid sphere. Each piece of candy has a diameter of 3 cm . If a box contains 30 pieces of candy, how much chocolate does the box contain? Use 3.14 for \( \pi \), and do not round your answer.

find the center and radius of the circle \( x^{2}-2 x+y^{2}=3 \)

Use geometric formulas to find the unsigned area between the graph of \( y=f(x) \) and the \( x \)-axis over the indicated interval. \( f(x)=x+10 ;[2,11] \) The area between \( f(x) \) and the \( x \)-axis is (Type an exact answer, using \( \pi \) as needed.)

Two gears are adjusted so that the smaller gear drives the larger one, as shown in the figure. If the smaller gear rotates through an angle of \( 270^{\circ} \), through how many degrees will the larger gear rotate?

\( 16 \quad \) How long is an arc intercepted by the given central angle in a circle of radius 3.97 km ?

find the center and radius of the circle \( x^{2}-2 x+y^{2}=3 \)