Question

A square has side length (2x+3). The perimeter is 60cm. Find the length of one side in centimetres

Answer 1

As given by the question

There are given that the side length is (2x+3) and perimeter is 60 cm.

Now,

From the formula of perimeter:

`\text{Perimeter =4}* side`

So,

`\begin{gathered} \text{Perimeter =4}* side \\ 60=4*(2x+3) \\ 60=8x+12 \\ 8x=60-12 \\ 8x=48 \\ x=(48)/(8) \\ x=6 \end{gathered}`

Then,

Put the value of x into the given side length (2x+3)

So,

`\begin{gathered} 2x+3=2*6+3 \\ =12+3 \\ =15 \end{gathered}`

Hence, the one side of length is 15 cm.