Question

the area of the square is 81cm sq find the perimeter and length of its diagonal​

Answer 1

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Looking gorgeous

Here is ur answer

Using the formulas

A=a square

P=4a

Solving for P

P=4A

=4·81

=36

Answer 2

Answer:

area of square is a²=81

then a= 9

then is perimeter is

a×4

9×4=36

perimeter is 36

diagonal is √2×a

√2×9 = 12.72