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waheguruBest ResponseYou've already chosen the best response.0
im posting the question sorry
 2 years ago

meverett04Best ResponseYou've already chosen the best response.2
Do you have the formula for the surface area of a cylinder?
 2 years ago

GTBest ResponseYou've already chosen the best response.3
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
 2 years ago

GTBest ResponseYou've already chosen the best response.3
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.
 2 years ago

waheguruBest ResponseYou've already chosen the best response.0
oh so i included the bottom???
 2 years ago

waheguruBest ResponseYou've already chosen the best response.0
k so this is what i did 2 x pi x 3^2 + 2 x pi x 3 x 30 and divide by 2
 2 years ago

GTBest ResponseYou've already chosen the best response.3
Remove 3*pi*r^2 and the rest is good.
 2 years ago

GTBest ResponseYou've already chosen the best response.3
Because the roof does not have a base and top (according to the problem description).
 2 years ago

asnaseerBest ResponseYou've already chosen the best response.0
the question is asking for the area of the roofs curved surface  that does not include the two ends of the greenhouse
 2 years ago

asnaseerBest ResponseYou've already chosen the best response.0
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 \(\pi rh\)
 2 years ago

waheguruBest ResponseYou've already chosen the best response.0
just practising for grade 9 EQAO
 2 years ago

waheguruBest ResponseYou've already chosen the best response.0
evil questions attacking ontario lol im kidding its like an exam for grade 9 students
 2 years ago

asnaseerBest ResponseYou've already chosen the best response.0
lol! :D  good luck with them...
 2 years ago

jhonyy9Best ResponseYou've already chosen the best response.0
is half perimeter of base multiply lenght=surface area
 2 years ago

asnaseerBest ResponseYou've already chosen the best response.0
@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 :)
 2 years ago

jhonyy9Best ResponseYou've already chosen the best response.0
yes right but this is the same like a rectangle curved on the base
 2 years ago
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