Find the surface area of the cylinder to the nearest tenth of a square unit. Use 3.14 for π.

Answer,

Step-by-step explanation:

so you actually don't need the image to help you. what you want to do first is write a area sentence.

'v=3.14 x r x r x h'

the height should be on the side of the cylinder, and the radius should be where the line and the circle is.

say if the radius is 20, and it only goes one way, and the height is 5.

the sentence would be;

'v=3.14 x 20 x 20 x 5'

now say if the radius is still 20, but the lines go both sides, then you have to divide by 2, and that would be 10.

so then the sentence would be

'v=3.14 x 10 x 10 x 5'

it's simple!

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: