Answer:
Explanation:
If a piece of string is used to form a square, the length of each side of the square will be equal to the length of the string divided by 4.
Given that the string is 40 cm long, we can find the length of each side of the square as follows:
Length of each side of the square = Length of the string ÷ 4
Length of each side of the square = 40 cm ÷ 4
Length of each side of the square = 10 cm
Therefore, each side of the square will be 10 cm long if a 40 cm long piece of string is used to form the square.