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An earthly problem

Humor/Fun (Jokes, riddles, and puzzles) · 12 of 12 known posts recovered

dhutch · Apr 26, 2011 10:37 PM

#0 source
A belt is placed around the equator of the Earth. Someone added 7 feet to the belt and it now hovers above the earth. How far away from the earth will it be??
Don

LNeumann · Apr 27, 2011 07:35 AM

#1 source
>A belt is placed around the equator of the Earth. Someone
>added 7 feet to the belt and it now hovers above the earth.
>How far away from the earth will it be??
>Don

Circumference is found by multiplying PI times diameter.

If you add 7 feet to the diamater, you must divide 7 by PI to get the increase in the diameter. 7 divided by 3.1416 = 2.228.

Divide this by 2 to get the elevation on each side of the diameter and the answer is approximately 1.1+ feet.
Leonard Neumann
Indianapolis, Indiana, USA

Jim Thomerson · Apr 27, 2011 03:07 PM

#2 source
You meant add 7 feet to circumference, not diameter.

LNeumann · Apr 28, 2011 01:21 PM

#3 source
>You meant add 7 feet to circumference, not diameter.

oops! Mea culpa. May the fingers that do the typing do a better job at discerning proper keys in their next adventure.
Leonard Neumann
Indianapolis, Indiana, USA

Clint Ormosen · May 06, 2011 01:18 AM

#4 source
>If you add 7 feet to the diamater, you must divide 7 by PI to
>get the increase in the diameter. 7 divided by 3.1416 =
>2.228.
>
>Divide this by 2 to get the elevation on each side of the
>diameter and the answer is approximately 1.1+ feet.


I get .2244 feet. Or a little less than 1/4 inch.
Clint
Finding new ways to screw up the pattern since 1993!

Jim Thomerson · May 07, 2011 11:14 AM

#5 source
Clint, no credit unless you show your work

Clint Ormosen · May 07, 2011 08:39 PM

#6 source
I just picked up where Len left off.

7 divided by 3.1416 = .4488 (not 2.228)

.4488 divided by 2 = .2244

.2244 feet above the ground.

Right?
Clint
Finding new ways to screw up the pattern since 1993!

Jim Thomerson · May 07, 2011 09:43 PM

edited#7 source
3 and a little more goes into 7 about 2 times. Len's calculations are correct. You divided 3.1416 by 7 rather than the reverse. Been there, done that, no T-shirt.

Clint Ormosen · May 07, 2011 11:59 PM

#8 source
Well, something isn't correct. Adding a measley 7 feet to a belt long enough to encircle the globe will not add over a foot of height
Clint
Finding new ways to screw up the pattern since 1993!

Jim Thomerson · May 08, 2011 09:27 AM

#9 source
This was in the "Ask Marilyn" column a few years ago, and her answer was like Len's. I think, in this case, arithmetic tops intuition.

Clint Ormosen · May 09, 2011 12:52 AM

#10 source
I'm going to get to the bottom of this......
Clint
Finding new ways to screw up the pattern since 1993!

dhutch · Jun 10, 2011 06:41 PM

#11 source
Hard to perceve but the correct answer is a little over one foot!!
One foot added to the radius of a circle adds 2 pi to the circumference. Since we quoted 7 feet added this would amount to a little over one foot above the surface.