Question

1.3.PS-17

The area of a square poster is 30 in.2. Find the length of

of an inch.

in.

The length of one side of the poster is

(Round to the nearest tenth as needed.)

Answer 1

5.48 inches

Explanation:

Given that the poster is in the shape of a square.

Area of the square poster = 30
`in^2`

To find:

The length of side of the poster = ?

Solution:

First of all, let us have a look at the formula for area of a square.

Let the side of square =
`x` inches

Formula:

`Area =Side * Side`

Putting the value of the side:

`Area = x* x\\`

Putting the value of Area as given in the question statement:

`30 = x^2\\\Rightarrow x =√(30)\\\Rightarrow \bold{x \approx 5.48\ inches}`