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
>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
You meant add 7 feet to circumference, not diameter.
>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
>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!
Clint, no credit unless you show your work
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!
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.
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!
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.
I'm going to get to the bottom of this......
Clint
Finding new ways to screw up the pattern since 1993!
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.