2006-11-28 00:32:52 · 4 answers · asked by Jessica C 1 in Science & Mathematics ➔ Mathematics
Mark you first two corners 20 m apart.
The third marker must be 20 m away from one corner and the other must be 20*sqrt(2) = 28.284 meters from the other corner (The length of the diagonal of a square is sqrt(2) * the side, so that distance will ensure that you have right angles.)
So tie a length of rope (no stretch), to each of the first two markers. Cut the ends at 20m and 28.284 m respectively. Hold the two ends together and find the spot where both ropes are taut. That's where your third marker goes.
Again, your last marker should be 28.284m from its opposite.
2006-11-28 00:54:26 · answer #1 · answered by Anonymous · 1⤊ 0⤋
First use heavy twine and short pieces of rebar (for posts) to mark a 20' length. At one end use a piece of rebar and another piece of the twine as a compass to mark of a 20' radius. From the other end piece (rebar) use a piece of twine (about 28' 3 3/3" long) and a piece of rebar as a compass to intersect the ark. The intersection will be your third corner. reverse the process to find your 4th one.
2006-11-28 09:02:54 · answer #2 · answered by Eds 7 · 0⤊ 1⤋
A meter is 3 feet, so therefore 20 meters would be 60 feet by 60 feet. So you could use a tape measure and work your way there with spot markers.
2006-11-28 08:40:25 · answer #3 · answered by Kbrand5 2 · 0⤊ 3⤋
1.) Measure 20 meters in any direction
2.) Turn to your right 90 degrees and measure 20 meters
3.) Repeat step 2.) twice more.
2006-11-28 08:36:37 · answer #4 · answered by Anonymous · 0⤊ 2⤋