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A machine begins pouring corn into an open silo at a constant rate of 3 cubic meters per minute. At the same time, a painter begins painting the outside wall of the silo. If the silo has the shape of a right circular cylinder with an inner wall radius of 5 meters and an outer wall radius of 6 meters, will the silo be filled to capacity with corn before the surface of the outside wall is completely painted?
(1) The painter paints at a constant rate of 1 square meter per minute.
(2) The height of the silo is 18 meters.
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A machine begins pouring corn into an open silo at a constant rate of 3 cubic meters per minute. At the same time, a painter begins painting the outside wall of the silo. If the silo has the shape of a right circular cylinder with an inner wall radius of 5 meters and an outer wall radius of 6 meters, will the silo be filled to capacity with corn before the surface of the outside wall is completely painted?
(1) The painter paints at a constant rate of 1 square meter per minute.
(2) The height of the silo is 18 meters.
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hs = height corn filled in a minute
w*l*hs =3 --> hs = 3/(5*6) = 1/10
(1) The painter paints at a constant rate of 1 square meter per minute.
hp = height painter paints in a minute
2(w*hp+l*hp) = 1 --> ( 2(5*hp+6*hp)=1 hp= 1/22
will the silo be filled to capacity with corn before the surface of the outside wall is completely painted? Yes .. hs > hp
Sufficient
(2) The height of the silo is 18 meters Insuffcient.. We don't the rate at which painting..
A What is OA.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.