The formula for the surface area of a cylinder is 277(r + h) where r is the radius of the cylinder's base and h is its height. A certain pole has a cylinder-like shape, where the base's radius is 10 centimeters and the height is 2 meters.

277(10+2)=277(12)=277x12=3324

2pi x 10x 210

Step-by-step explanation:

Hope this helps. I got it from khan

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.