waheguru
  • waheguru
need some help im getting 311
Mathematics
katieb
  • katieb
See more answers at brainly.com
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.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

anonymous
  • anonymous
ok
jhonyy9
  • jhonyy9
???
karatechopper
  • karatechopper
311?

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

waheguru
  • waheguru
im posting the question sorry
waheguru
  • waheguru
1 Attachment
waheguru
  • waheguru
here we are
anonymous
  • anonymous
Do you have the formula for the surface area of a cylinder?
waheguru
  • waheguru
2pirsq plus 2pirh
anonymous
  • anonymous
Surface area of fully cylinder = circumference * length. Here, you have half of it. So, 1/2*circumference*length = 1/2 * pi * 6 * 30 = 90 * pi
jhonyy9
  • jhonyy9
a.
anonymous
  • anonymous
waheguru - that is when including bottom and top circles. In this case, the roof has no such thing. So, you just need 1/2 circumference * length.
asnaseer
  • asnaseer
@GT is right
waheguru
  • waheguru
oh so i included the bottom???
anonymous
  • anonymous
Yeah. Don't.
waheguru
  • waheguru
k so this is what i did 2 x pi x 3^2 + 2 x pi x 3 x 30 and divide by 2
anonymous
  • anonymous
hi
anonymous
  • anonymous
Remove 3*pi*r^2 and the rest is good.
waheguru
  • waheguru
y
jhonyy9
  • jhonyy9
a. is right sure
anonymous
  • anonymous
Because the roof does not have a base and top (according to the problem description).
asnaseer
  • asnaseer
the question is asking for the area of the roofs curved surface - that does not include the two ends of the greenhouse
waheguru
  • waheguru
so just the lateral
anonymous
  • anonymous
yes.
waheguru
  • waheguru
thx brozz
asnaseer
  • asnaseer
the curved surface of a cylinder has a surface area of \(2\pi rh\). in this case you have half a cylinder, so the surface area becomes \(\pi rh\)
anonymous
  • anonymous
HI GUYS
waheguru
  • waheguru
just practising for grade 9 EQAO
asnaseer
  • asnaseer
what is EQAO?
waheguru
  • waheguru
evil questions attacking ontario lol im kidding its like an exam for grade 9 students
asnaseer
  • asnaseer
lol! :-D - good luck with them...
waheguru
  • waheguru
thx
jhonyy9
  • jhonyy9
is half perimeter of base multiply lenght=surface area
jhonyy9
  • jhonyy9
this very easy
asnaseer
  • asnaseer
@jhonyy9 - things are always easy when you know how to do them - try and recall the days when you were also at the lower end of the learning curve :-)
asnaseer
  • asnaseer
like we ALL were
jhonyy9
  • jhonyy9
yes right but this is the same like a rectangle curved on the base

Looking for something else?

Not the answer you are looking for? Search for more explanations.