Saturday
May 25, 2013

# Homework Help: Algebra

Posted by Nancy on Monday, November 8, 2010 at 8:44pm.

You need to make a soda can with a volume of 29 cubic inches.

Find the surface area. calculate the following:
a) How much material is needed if the can's radius is 1 inch?

• Algebra - Reiny, Monday, November 8, 2010 at 10:01pm

let the height be h
volume = πr^2h
π(1^2)h = 29
h = π/29

the surface area are
top + bottom + rectangle forming the outside of the cylinder
= 2πr^2 + 2πrh
= 2P(1) + 2π(1)(π/29)
= .....

• Algebra - Nancy, Monday, November 8, 2010 at 10:55pm

= 64.28319 in^2

thank you!

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