Question

Find the perimeter of a square of area 169cm​

Answer 1

Answer:

Step-by-step explanation:

Find the length

Area of a square has a formula like this.

Area = s²

s = side length of a square

Area has already known from the question, so it become :

Area = s²

169 = s²

to obtain "s", we must square root 169

s = √169

s = 13 cm

Find the perimeter

Perimeter of a square has a formula :

Perimeter = 4 × s

Remember that, square has 4 sides that have the same length. So its perimeter is four times of its length.

We already know that :

s = 13 cm

So, the perimeter is :

Perimeter = 4 × s

Perimeter = 4 × 13

Perimeter = 52 cm

Now we have the answer that the perimeter of a square that has an area 169 cm² is 52 cm.