







Everything in a cube 2 miles long? 
20100131 

From Naresh: in a book, i got to read this :
Is it possible to pack the entire population of earth and everything that was created by
humankind in a cube whose edges are 2 miles long ?
Is it possible? Thanks. Answered by Stephen La Rocque. 





Packing spheres in a given region 
20100127 

From MISAEL: IN A VOLUME GENERATED BY TWO TRAPEZOIDS WITH DIFFERENT SURFACE AREAS BUT SHARING THE BOTTOM PLANE:
HOW CAN I CALCULATE THE "N" SPHERES WHICH THIS VOLUME CAN CONTAIN?
HOW CAN I CALCULATE THE VOLUME OF SPACES IN RELATIONSHIP WITH VOLUME OF SPHERES OR THE TOTAL VOLUME? Answered by Robert Dawson. 





How many 4x4 tiles would I need for 10 sq ft? 
20100104 

From Chris: how many 4x4 tiles would I need for 10 sq ft Answered by Robert Dawson. 





Pieces of metal in a container 
20091120 

From sheri: I need to estimate how many pieces of metal are in a container that is 3 feet by 3 feet and 2 feet high.
the metal pieces are 1" round and 1/2 centimeter thick. I've never been any good at math.
please help.
thanks,
Sheri Answered by Robert Dawson. 





Cables in a pipe 
20091113 

From john: how many 0.28 mm diameter cables will fit into a 19.05 mm diameter pipe Answered by Stephen La Rocque. 





Packing a truck 
20080610 

From Ann: I am renting a 24ft box truck and have been told it is 1401 cubic feet. I want to know if I have 23 display cases to move and each is 6ft X 2ft X 3ft will the all fit? Or do I need additional info in order to figure this out? Answered by Penny Nom. 





Packing a trailer 
20080401 

From Shellie: I have a trailer that is 8 ft x 5 ft. I have a hutch base that is 32 in
x 52 in,
hutch top is 47 in x 52 in, table 56 in x 44 in, 6 chairs that are 48 in
x 20 in.
I know that the cubic feet of the trailer is l x w x h=3D 5 x 8 x 5=3D 200
cubic feet
I know that the area of the items are approximately 1026 feet.
How do I
know
if these things will fit? I would like to know the math behind it? Answered by Penny Nom. 





Three balls packed in a box 
20080207 

From jasmin: Four spherical balls having diameter of 4 cm are placed in a square box whose inside base dimensions are 8 cm. In the space between the first four spherical balls, a fifth spherical ball of the same diameter is placed. How deep must the box be in order that the top will touch the fifth ball? Answered by Stephen La Rocque. 





Square metres 
20070209 

From Wendy: Can you tell me the best way to find out how many 3m x 2m square plots i would be able to fit into a 50m x 100 m room? Answered by Stephen La Rocque and Penny Nom. 





How many nickels would it take to fill a room? 
20060822 

From Diana: How many nickels would it take to fill a room that measures 20 feet x 20 feet x 10 feet? Answered by Stephen La Rocque. 

