Anonymous

4√628 = 4√(4·157) = 4·2√157 = 8√157 you can do the math

Anonymous

Area = side x side which means x^2 = 628 x = √628 ≈ 25.06 perimeter = 4x = 4(25.06) = 100.2 cm ;)

Anonymous

A square of side x has perimeter of 4x and an area of x^2; if x^2 = 628 cm^2 then x = (628)^0.5 cm so the perimeter is (4)[(628)^0.5 cm ]