Joke Collection Website - Cold jokes - mathematical problem
mathematical problem
When the swing is still hanging, the height of the pedal from the ground is 1 foot. Now shake out the distance of two steps. Someone recorded that the height of the pedal was 5 feet from the ground. Celebrities and beautiful women compete to swing and laugh all day; The craftsmen are curious about how long the swing rope is.
Answer: It can be calculated that the chord length of the swing sector is the root sign (100+ 16)=2 root signs (29).
From the vertical line with the center of the circle as the chord, it can be known that the chord tangent angle is equal to half of the central angle, and the obtained right triangle is similar to the triangle where the chord tangent angle is located. The radius (that is, the rope length) can be obtained from the proportional relationship of the corresponding line segments as follows.
L=R= 14.5 feet.
That is, the rope length is 14.5 feet.
- Related articles
- What animal is the bugatti symbol?
- How do the man and the woman pay the marriage change fee? How do the man and the woman pay the marriage change fee?
- Tuanjian dinner joke
- Humor on playing mahjong
- There are four things in the countryside that you don't borrow, and you die if you borrow them. Do you know four things?
- Yang Lei's joke about litchi.
- Hair gel joke
- Switch humorous jokes
- How to color a picnic basket?
- What do you mean by killing you with a hot stick?