Question

Find perimeter of square of it's area is 81 cm
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Answer 1

Answer:

36cm

Step-by-step explanation:

A square has same sides. So a number must be multiplied to itself. (Ex: 9*9)

Let's check 81's factors:

1, 3, 9, 27, 81

The only number in this list when multiplied with itself will result in 81 is 9.

We found out that the square's side is 9cm. A square perimeter= sides*4

                                                                                                          = 9cm*4

                                                                                                          = 36cm