what is the surface area of a cylinder that is r=9cm,h=15cm round to tenth of a square unit
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Well, let us start with what counts as surface area. Can you explain?
no i cant the book just give me r=9cm,h=15cm
Forget dimensions. Start with cylinder shape. What would be part of its "surface"?
Not the answer you are looking for? Search for more explanations.
is it 2(pir2)+(2pir)
Well....you are missing the length of the cylinder.
If you get the concept of the surface of a cylinder as the are of two circles on top and bottom, plus the length of the circumference of the circle across the cylinder, then you will be right. Then, it is a matter of figuring out the "formulas" and plugging values of the respective dimensions.
i got 254.469 as my answer
i think i did something wrong
2*pi*9^2 + 2*pi*9*15
The area of the top which is a circle is pir^2 So the top and bottom area is the total of the two circles or 2pir^2. The radius is 9 so that makes a total of 162pi. Now how about the rest of the cylinder. We have eliminated the top and bottom of the "can" so not we have a tube left. If we split the "tube" open, we will have a rectangle. The height of the rectangle is the height of the cylinder and the base of the rectangle is the circumference of the circle. so the area of the rectangle is 2pir(h) Add that to the 162pi and you will have the total area or 432 pi
thank you now im able to complete my others problems like this