Answer:
The side length of the smallest square plate will be 28.28 cm.
Step-by-step explanation:
The length of the chopstick = 40 cm
If chopstick is placed diagonally in a square plate, we can assume that it forms a right angle triangle with two sides of the square.
So, lets say the side of the square is x
Then according to Pythagoras theorem, we can conclude:
=>
=>
=>
=>
=>
x =
So, the side length of the smallest square plate will be 28.28 cm.