Friday

April 18, 2014

April 18, 2014

Posted by **JOY** on Tuesday, May 24, 2011 at 9:33am.

I came up with 141.3 total sq inches

answer should be 25 minutes but I don't get that??

- Geometry -need help -
**Jai**, Tuesday, May 24, 2011 at 9:56amrecall that the surface area of cylinder is given by

SA = 2πr^2 + 2πrh

where

r = radius

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

- Geometry -need help -
**JOY**, Tuesday, May 24, 2011 at 10:12amthank you

**Related Questions**

Geometry - A cylinder flower pot with open top needs to be painted. The height ...

Geometry - A cylindrical flower pot with an open top needs to be painted. The ...

math - The volume of each shape is 250 cubic inches. A) Find the height of a ...

math - A cylinder labeled X has a height of 10 inches and a radius of 15 inches...

geometry - a cylinder is inscribed in a rectangular solid with a base length ...

Physics - The Flower Pot: A flower pot falls off a windowsill and falls past the...

Physics - A drowsy cat spots a flower pot that sails first up and then down past...

math - A cone has a radius of 6 inches and a height of 9 inches a) calculate the...

math - a can of soup completely fills a cylinder 5 inches tall and 3 inches in ...

geometry- need help - Claim: the lateral (side ) surface of any area of any ...