Current location - Training Enrollment Network - Mathematics courses - 20 1 1 math problems for the senior high school entrance examination in Jingzhou
20 1 1 math problems for the senior high school entrance examination in Jingzhou
When the box is disassembled, except for the upper and lower sides, it is rectangular, indicating that ants climb from the P end point of the rectangle to the Q end point.

The shortest path is the diagonal of the rectangle.

According to the box data, the rectangle is (2+4)x 2= 12cm long and 5cm wide.

Diagonal length? = 12? +5?

The shortest path is 13cm.