Question

Find the length of the side of the following squares,given the area.
a) Area = 81 sq.mm

Answer 1

Answer: 9 mm

Step-by-step explanation:

area = s*s

81 = s²

s = √81

s = 9

Answer 2

Answer:

9 mm

Step-by-step explanation:

area of square = 81 mm²

lenght of side of square = √81

                                        = 9 mm