You graph a rectangle on a coordinate plane that has vertices (0,0), (3,0), (0,2), and (3,2). you then rotate that figure 360 degrees around the x axis creating a cylinder. whats the surface area of a cylinder?
explain the steps on how to figure it out

From the points given we know that the rectangle is 3 points wide and 2 points tall. If we rotate it around the x axis then we will receive the lying cyllinder which will be 3 points tall and 2 points wide (so its radius is 2/2 = 1 point). Now we can find the surface area of the cyllinder using appropriate formula:

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle