home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
TIME: Almanac 1990
/
1990 Time Magazine Compact Almanac, The (1991)(Time).iso
/
time
/
031389
/
03138900.005
< prev
next >
Wrap
Text File
|
1990-09-22
|
800b
|
15 lines
LETTERS, Page 8Metric Makes It Easy
Some readers objected to the way math professor John Allen
Paulos calculated the depth to which all the human blood in the
world would cover New York City's Central Park (EDUCATION, Jan.
30). They said the problem is simplified by using the metric
system. Assume an average of 4 liters of blood per person for 5
billion people; that totals 20 billion liters. Since 1 liter equals
0.001 cubic meter, the volume is 20 million cubic meters. Central
Park's area is roughly 3.4 million square meters. Dividing 20
million cubic meters by 3.4 million square meters yields about 5.9
meters. Thus all the human blood in the world would cover the park
to a depth of 5.9 meters, or about 19 ft. (Paulos said "something
under 20 ft.") Easier by a mile.