Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
ameryn.love17
Group Title
Find the surface area of a cylinder with a base diameter of 8ft and a height of 9ft .
Write your answer in terms of , and be sure to include the correct unit.
 2 years ago
 2 years ago
ameryn.love17 Group Title
Find the surface area of a cylinder with a base diameter of 8ft and a height of 9ft . Write your answer in terms of , and be sure to include the correct unit.
 2 years ago
 2 years ago

This Question is Closed

ameryn.love17 Group TitleBest ResponseYou've already chosen the best response.0
dw:1330128011662:dw
 2 years ago

jryaaaan18 Group TitleBest ResponseYou've already chosen the best response.0
find the area of the circle forming the top of the cylinder, then multiply it by your height to give you the volume
 2 years ago

bahrom7893 Group TitleBest ResponseYou've already chosen the best response.0
144pi(ft^3)
 2 years ago

virtu Group TitleBest ResponseYou've already chosen the best response.3
The best way to visualize this problem is by taking a piece of paper and rolling it up to look like a cylinder. You will have a hollow cylinder, but we can fix that in the problem. We have two circles and one rectangle This will give us the surface area. First we will compute the area of a single circle the area of a circle is defined as pi*r^2=a the diameter (d) of a circle is 2*radius (r) d=2r therefore d/2=r d=8 8/2=4=r pi*4^2=area of a single circle but we have two circles (one on top and one on bottom) 2(pi*4^2)=area of two circles We now need to find the area of the edges. This is where the paper will come in to handy. Take a sheet of paper and roll it up in a circle. You'll notice that you now have a cylinder. The area of the paper = length*width. Our given length is 9 we need to find our width. In order to do that we have to find a relationship between the square and the circles. The length of the circle's edge is the width that we are looking for. So we need to find the circumeference. the circumference of a circle (our width) is = 2*pi*r 2*pi*4=width width*height = area of sides of cylinder=area of a square rolled up area1 = 2(pi*4^2)=100.53 area 2 = (2*pi*4)*9 = 226.1946710584651 area1+area2= 326.7256359733385ft^2
 2 years ago

ameryn.love17 Group TitleBest ResponseYou've already chosen the best response.0
whoa!!!
 2 years ago

ameryn.love17 Group TitleBest ResponseYou've already chosen the best response.0
lol not to sound stupid but wheres the answer
 2 years ago

ameryn.love17 Group TitleBest ResponseYou've already chosen the best response.0
it is
 2 years ago

virtu Group TitleBest ResponseYou've already chosen the best response.3
Does it help?
 2 years ago

ameryn.love17 Group TitleBest ResponseYou've already chosen the best response.0
im trying it out
 2 years ago

Chlorophyll Group TitleBest ResponseYou've already chosen the best response.0
SA = 2 pi r^2 + 2 pi r h = 2 pi r ( r + h) = 2 pi 4 ( 4 + 9) = 326.6 ft^2
 2 years ago

Chlorophyll Group TitleBest ResponseYou've already chosen the best response.0
Any comment, ameryn?
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.