It needs to be shaped either like a square or rectangle, NO circles or any other shapes that the measurement cant be read accurately for volume.
it does not have the be the same height all around...
im looking for it to hold atleast 50 pennies.
2007-11-01 12:25:14 · 6 answers · asked by Anonymous in Education & Reference ➔ Homework Help
oh haha very funny; we are only using centimeters because it is a physical science class....and we need to be exact and inches arent always perfect.
and i didnt have any spare pound coins; sorry.
2007-11-01 12:41:39 · update #1
every penny weighs 2.5 grams.
2007-11-01 12:41:54 · update #2
The closer to a perfect square that it is, the more capacity it will have. Rectangles are less efficient in terms of maximizing volume than squares of the same perimeter are.
2007-11-01 12:30:27 · answer #1 · answered by righteousjohnson 7 · 0⤊ 0⤋
FOLD EACH SIDE IN 2.5 CM
THIS IS WHY
V= L * W* h
substitute
V= (15-2x)(15-2x)(x)
distribute
V= (225-30x-30x+4(x)^2) (x)
re-arrange
V= (4(x)^2 -60x +225) (x)
simplify
V= 4(x)^3 - 60(x)^2 + 225x
take the first derivative
V'= 12(x)^2 - 120x + 225
set derivative = 0
12(x)^2 - 120x + 225=0
solve for x
using the quadratic formula or factoring
......x=7.5 & x=2.5...... (these are critical points) when substituted into derivative = 0
Find minimum or maximum point through Derivative Test.
Derivative test, this is homework!!
x=7.5 is minimum resistance
x=2.5 is MAXIMUM resistance
Therefore FOLD THE 15X15cm square IN 2.5CM
EACH SIDE...
need extra notes for this?
email me carloscruz199six@gmail.com
I was thought this in a AP Readiness program at UCLA
For high school students
2013-11-22 19:24:15 · answer #2 · answered by Carlos Cruz 1 · 0⤊ 0⤋
build your boat so u have a maximum amount of foil in contact with the water. a rectangular boat with very low sides is ideal
2007-11-01 12:30:14 · answer #3 · answered by bob b 1 · 0⤊ 0⤋
well..I don't know..how much does 50 pennies weight..and why are you using the metric system for measurements and using American money...whats going on here..has the commie metric system over taken the standard American system..whats next...you will be using Euros..instead of American copper...what are they teaching you in school...how not to be an American...just kidding..good luck with your home work assignment...
2007-11-01 12:35:47 · answer #4 · answered by Anonymous · 0⤊ 1⤋
a lot of surface area and a small hole to put the pennies in, air keeps it afloat, so a design that keeps air in.
2007-11-01 12:29:39 · answer #5 · answered by Ray E 5 · 0⤊ 0⤋
an ark.
.
2007-11-01 12:27:36 · answer #6 · answered by Anonymous · 0⤊ 1⤋