Ineed with this algebra thing as well, because i literally do not understand it (this is a geometry class)

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Which of the following are accepted without proof in a logical system? check all that apply.

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm