Question

Jorge is designing a square poster. the poster has an area of 169in^2.what is the length of each side?

A.13,-13
B.13
C.42.25,-42.25
D42.25
IN NEED OF HELP!​

Answer 1

`Let \: the \: side \: of \: the \: poster \: be \: x\: (x>0) \\ \Rightarrow {x}^(2) = 169\Leftrightarrow x = 13 \\ \Rightarrow B. \: 13`

Answer 2

B. 13 inches

Explanation:

We are given that,

The area of the square poster = 169 in²

it is required to find the length of the sides.

Now, we know,

Area of a square =
`(Side)^2`

i.e.
`169=(Side)^2`

i.e. Side = ± 13 inches

As the length of the square cannot be negative.

Thus, the length of each side is 13 inches.

So, option B is correct.