a goat is tethered to the edge of a circular field,
the field has a radius of 20 metres,
the owner of the field only wants the goat to be able to graze on half of the field,
how long should the rope be?
2007-01-28 12:07:40 · 12 answers · asked by Anonymous in Entertainment & Music ➔ Jokes & Riddles
its not 20 metres, that would anable the goat to graze less than half the field
you need to start by working out the area of the circle ten working out the width of the eclipse that gives you an area of half the circle, take the width away from double the radius and then you have your answer
2007-01-28 12:19:27 · update #1
it would be a length more than the radius, its not 5 meters, also circular fields do have edges, the have 1 edge that goes all the way around
2007-01-28 12:30:51 · update #2
28.285 meters
2007-01-28 13:27:48 · answer #1 · answered by ducky blue17 2 · 0⤊ 0⤋
Well, since you determine the area by the formula pi r(square), then to get 1/2 the area you need to get 1/4 of the radius, so the answer is 5 meters. . .
2007-01-28 12:42:32 · answer #2 · answered by Walking Man 6 · 0⤊ 1⤋
5 meters...a ten meter rope would allow the goat a 20meter radius and a five meter rope only allows for a ten meter radius
hmm i was thinking about staking the goat out on the middle of the area...
2007-01-28 12:18:40 · answer #3 · answered by Small_And_Mighty 2 · 0⤊ 1⤋
I agree with 5 meters
2007-01-28 12:27:00 · answer #4 · answered by Anonymous · 0⤊ 1⤋
Small undertaking: there are basically 9 letters used right here, one under the ten required to apply all digits from 0-9. And, in reality, it fairly is shown that, in this actual puzzle, there will be a minimum of two recommendations thank you partly to that reality.
2016-12-13 03:12:15 · answer #5 · answered by Anonymous · 0⤊ 0⤋
40 meters
2007-01-28 12:55:21 · answer #6 · answered by BrittanyxAriel 2 · 0⤊ 1⤋
5 Metres?
2007-01-28 12:24:23 · answer #7 · answered by Havana Brown 5 · 0⤊ 1⤋
Circular fields do not have edges
2007-01-28 12:27:46 · answer #8 · answered by hendrik k 2 · 1⤊ 0⤋
I guess ca. 24 metres
2007-01-28 12:40:06 · answer #9 · answered by wolf 6 · 0⤊ 0⤋
20 meters long!
2007-01-28 12:11:44 · answer #10 · answered by Anonymous · 1⤊ 2⤋