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need some help im getting 311

Mathematics
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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.

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Other answers:

im posting the question sorry
1 Attachment
here we are
Do you have the formula for the surface area of a cylinder?
2pirsq plus 2pirh
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
a.
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.
@GT is right
oh so i included the bottom???
Yeah. Don't.
k so this is what i did 2 x pi x 3^2 + 2 x pi x 3 x 30 and divide by 2
hi
Remove 3*pi*r^2 and the rest is good.
y
a. is right sure
Because the roof does not have a base and top (according to the problem description).
the question is asking for the area of the roofs curved surface - that does not include the two ends of the greenhouse
so just the lateral
yes.
thx brozz
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 \(\pi rh\)
HI GUYS
just practising for grade 9 EQAO
what is EQAO?
evil questions attacking ontario lol im kidding its like an exam for grade 9 students
lol! :-D - good luck with them...
thx
is half perimeter of base multiply lenght=surface area
this very easy
@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 :-)
like we ALL were
yes right but this is the same like a rectangle curved on the base

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