On Pythagorean theorem The teacher asked the students to go home and prepare a 21cm long wooden stick for use in class. In order to prevent the stick from breaking, Xiao Ming wanted to put it into his pencil case. It is known that Xiao Ming's pencil case is a cuboid 20cm long and 8cm wide. Can the stick prepared by Xiao Ming be put into his pencil case? Note: write down the steps

On Pythagorean theorem The teacher asked the students to go home and prepare a 21cm long wooden stick for use in class. In order to prevent the stick from breaking, Xiao Ming wanted to put it into his pencil case. It is known that Xiao Ming's pencil case is a cuboid 20cm long and 8cm wide. Can the stick prepared by Xiao Ming be put into his pencil case? Note: write down the steps

You can put the stick on the diagonal position of the rectangle of the stationery box. According to the Pythagorean theorem, the diagonal length is root 464 > root 441 (the square of 21 is 441), so it can be put down