A thief was found by the police, 11 A thief was found by the police

Isosceles right triangle.

12* (root number two-1) is approximately equal to.

How to swing? Run first, then grab the rope like a pole, and swing over by adjusting your center of gravity... The lower end just doesn't rub against the ground).

Equilateral right triangle algorithm.

The riparian tree forms a triangle with the width of the river with straight edges, assuming that the tree height = a river width = b, and the maximum side of the thief swinging is =c

then a*a +b*b=c*c

12*12+12*12=c*c

288=c*c

When c=17, c*c= 289

Therefore, the maximum distance is: 17-12=5

The 5-meter algorithm is the hypotenuse length of an isosceles right-angled triangle composed of a large tree and the river surface, minus the scarf, and breaks it down into two 6-meter knots to form a difference of 12 meters. It's about five meters, and if you count the height of the thief, the distance is about 3 meters, so it shouldn't kill or cripple people.

12 meters with an hypotenuse length of 2 times the root number is about equal to 17 meters 17-12 = 5 meters.

Only by climbing the tree first, and then tying the scarf to the top of the tree and hanging the scarf to swing over, how else can you swing.

1. Around Weibo, it means that the weather is very cold and the river is frozen, so just walk over.

2. There is no freezing, the river is very shallow, so you can just walk over it.

3. There is no freezing, the river is very deep, and you can swim directly to it.

I have time for you to walk over or swim over! The actual line of the whole is not, in saying that the tree is 12, the scarf is knotted into 12 meters, how do you swing up!

It is calculated that the hypotenuse is 17, and 12 plus the height of the person will not be long enough!

The river is 12 meters wide, and I don't say how much water there is in the river, maybe the river was only 1 meter wide at that time, and all the answers should not be blinded by useless surfaces.

Well, I'll give you a few more answers, answer one: the river is very shallow, and the thief goes straight to it. (Because you didn't say the depth of the river, you just said that it was 12 meters long).

Answer 2: There is a bridge over the river, and the thief runs over it (you didn't say if there is a bridge).

Answer 3: A boat is parked on the river, and the thief rows past it (you didn't say if there is a boat).

Answer 4: The thief is actually Phelps, who swam directly over (you didn't say whether the thief could swim).

Answer 5: An axe was placed next to the tree, and the thief chopped down the book to make a bridge to cross the river (you didn't say if there was an axe).

Answer 6: The thief tore the scarf vertically into three sections, so that the three six-meter ties together are twelve meters, and then threw it on the other bank to find a way to tie it, and then crossed the river with water.

The answer is ......Do you want me to go on?

Okay, well, since you're all in the mindset, I'll reason about the answer according to the conditions given. First of all, the first hint is that the leaves of the tree have fallen out. The second tip, the thief is wearing a scarf.

What does this mean? It means that it was very cold at that time. It's winter!

So, the answer is simple. The river was already frozen and frozen, and the thief ran straight over the ice.

The thief wrapped around his neck, and all the leaves had fallen, indicating that it was winter. In winter, the river either runs out of water or freezes into ice.

So the thief ran across the river. 2.Suppose the thief weighs 50kg, then the thief ties the scarf to the book and starts to be, suppose the thief does a flat throwing movement, then at the moment when the thief lets go, he is only 6m away from the other side of the river, according to y=1 2*g*t 2 to get t=, according to the centripetal force f=a*v 2 r, can get v=, and finally according to x=v*t=>(12-6)m, so the thief can use this tree and the scarf around the neck to swing across the river.

Look at the description is winter, the river is frozen, and I ran straight over.

There is a bridge over the river, run straight over.