Posted by **jeng** on Thursday, October 29, 2009 at 10:14pm.

An aluminum cylindrical juice can has a height of 4 in. and a radius of 6 in. How many square

inches of aluminum are needed to make the can?

- math -
**Reiny**, Thursday, October 29, 2009 at 10:48pm
Visualize a can, cut off the circles at the top and bottom, and cut open the remaining "sleeve".

Don't you now have 1 rectangle and 2 equal circles?

Find the areas of each and add them up

(hint: the length of the rectangle is the circumference of the circle)

## Answer this Question

## Related Questions

- Math - An aluminum cylindrical juice can has a height of 4 in. and a radius of 6...
- Calculus1 - You are designing a 1000 cubic cm closed cylindrical can with radius...
- ps 189 - if a aluminum can has a radius of 10cm and a height of 20 cm. how many ...
- math - A cylindrical jar with height 8 inches and diameter 6 inches is filled to...
- Elementary Analysis - A company wants to manufacture cylindrical aluminum cans ...
- chemistry - an aluminum cylinder is 10.0 cm in length and has a radius of .25 cm...
- Calc - cylindrical can is to be made from a rectangular piece of aluminum that ...
- calculus - A large soup can is to be designed so that the can will hold 54pi ...
- 11th Grade-Calc - cylindrical can is to be made from a rectangular piece of ...
- Chemistry - Aluminum is more reactive than iron, yet it is used today for a ...

More Related Questions