Question

A piece of string is $30cm$ long. What will be the length of each side if string is used to form a square?

Answer 1

Finding the length of each side of square

The length of string $=30cm$

String is used to form a square.

Let each side of square be $acm$.

Perimeter of square $=4\times side$

Since, a piece of string $30cm$ long is used to form a square

$$\begin{gathered} \therefore 30=4a \\ \Rightarrow a=\frac{30}{4} \\ \Rightarrow a=7.5cm \end{gathered}$$

Thus, the length of each side of a square is $7.5cm$.