The perimeter of a square is 56cm. what is the approximate length of its diagonal?

To find the answer, we can use the Pythagoras theorem, where:

Where a and b is the side length and c is the diagonal.

In this case:

Therefore, the answer is 79.2cm

Hope it helps!

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.