Saturday
March 28, 2015

Homework Help: geometry/algebra

Posted by Nancy on Tuesday, November 9, 2010 at 7:46pm.

I asked this question yesterday, and I'm trying to understand it since I got the wrong answer - please explain:


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?

I figured it this way:

Let the height be h
volume = π rh
29 = π (1) h
h = 29/π

So πr 2 + 2π 29/π

2π + 58 = 64.28 in

but person who helps me gets it this way:

Let the height be h
volume = π rh
π (1)h = 29
h = π /29

the surface area are
= 2 π r+ 2 π rh
= 2 π (1) + 2 π (1)( π /29)
= 6.96 in


Can anyone help me and tell me which is correct? I think the problem may
be that I get the volume 29/╥

intead of ╥/29

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

algebra/geometry please correct me - You need to make a soda can with a volume ...
Math - The height was 30, the width was 25,and the length is 20. What is the ...
Algebra - You need to make a soda can with a volume of 29 cubic inches. Find the...
math - Using this formula: V=LWH Find the volume(v)of a toy box with length (L) ...
Math - V = 4/3r3. A sphere has a radius of 4 inches. Volume (to the nearest ...
algebra - would you please help me answer this question??? thanks mary wants to ...
math - A sphere has a radius of 3.5 inches. Volume (to the nearest tenth) = ...
math - I asked sue a question yesterday and don't understand the answer can you ...
math 2 - max packs cereal boxes into a larger box the volume of each cereal box ...
Health - I posted this question yesterday and I got confused. The determinant of...

Members