# Geometry -need help

A cylinder flower pot with open top needs to be painted. The height is 9 inches and radius is 3 inches. If it takes Troy 5 minutes to paint 40 square inches, how long to the minute will it take him to paint the outside of the flower pot.
I came up with 141.3 total sq inches
answer should be 25 minutes but I don't get that??

1. 👍 0
2. 👎 0
3. 👁 49
1. recall that the surface area of cylinder is given by
SA = 2πr^2 + 2πrh
where
h = height
π = "pi" equal to 3.14 (constant)
substituting,
SA = 2*(3.14)*3^2 + 2*(3.14)*3*9
SA = 226.08 in^2

then we divide this by his speed, 40 in^2/5 min:
226.08/(40/5)
226.08 / 8 = 28.26 minutes

hope this helps~ :)
and multiply this by 5

1. 👍 0
2. 👎 0
posted by Jai
2. thank you

1. 👍 0
2. 👎 0
posted by JOY
3. A wood board, 75 inches long, was cut on three pieces.
Every next piece is 5 inches longer tham the previous.
How long is the first piece?
Assign x for the length of the first piece,
create an equation and find x.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Geometry

A cylinder flower pot with open top needs to be painted. The height is 9 inches and radius is 3 inches. If it takes Troy 5 minutes to paint 40 square inches, how long to the minute will it take him to paint the outside of the

asked by Mary on May 23, 2011
2. ### Geometry

A cylindrical flower pot with an open top needs to be painted. The height of the pot is 9 inches and the radius is 3 inches. If it takes Troy 5 minutes to paint 40 square inches, how long to the minute will it take him to paint

asked by mary on April 18, 2011
3. ### Physics

A drowsy cat spots a flower pot that sails first up and then down past an open window. The pot is in view for a total of 0.50s. And the top to bottom height of the window is 2.00m. How high above the window top does the flower pot

asked by Waqas on September 13, 2008
4. ### Physics

The Flower Pot: A flower pot falls off a windowsill and falls past the window below. It takes .3 s to travel from the top of the window to the bottom of the window which is 2.2 m tall. From what height above the top of the window

asked by Zalak on November 20, 2012
5. ### Physics

3.A brown flower pot is dropped from an open window from the top floor of a brick apartment building on a Sunday afternoon in April. It fell 3.00 seconds before crashing into multiple pieces on the wet sidewalk below. How far did

asked by Micheal on November 18, 2015
6. ### Physics

3.A brown flower pot is dropped from an open window from the top floor of a brick apartment building on a Sunday afternoon in April. It fell 3.00 seconds before crashing into multiple pieces on the wet sidewalk below. How far did

asked by Micheal on November 18, 2015
7. ### physic

As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length of your window is Lw. Take down to be the positive direction, so that downward velocities are positive

asked by koler on September 29, 2013
8. ### physic

As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length of your window is Lw. Take down to be the positive direction, so that downward velocities are positive

asked by koram on October 3, 2013
9. ### MATH

A rectangular flower is 20 inches long,8 inches wide ,and 6 inches high . True of false. If andy fills the flower pot 2/3 full of soil, the expression 2/3(20 + 8 + 6) could be used to find the about of soil he needed.

asked by Dani on February 27, 2011
10. ### General Physics

A 6 kg flower pot falls from a window ledge 10 meters above the ground. a) What is the Kinetic Energy of the flower pot just as it reaches the ground? b) What is the speed of the flower pot just before it strikes the ground?

asked by Azerfiti on October 1, 2013

More Similar Questions