Acircle has a radius of length r. if you mark off an arc on the circle of length 2r what is the measurement of the angle that subtends the arc?
a 2pi radians
b. 2 pi r radians
c. 2r radians
d. 2 radians

plz ! and explain

Which is equivalent to 10/12? options: 10/18 5/6 3/12 9/11

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.

Given sin∅ = 1/3 and 0 < ∅ < π/2 ; find tan2∅ a. (4√2)/9 b. 9/7 c. (4√2)/7 d.7/9