The diagonal of a square is 8 units. what is the perimeter of the square?

16√2 or 22.63 units to the nearest hundredth.

Step-by-step explanation:

By Pythagoras the sum of the squares of adjacent sides of the square = 8 squared. So, if the side is x units long, then:

x^2 + x^2 = 8^2

2x^2 = 64

x^2 = 32

x = √32.

So the perimeter = 4√32

= 4*√16*√2

= 16√2.

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.