Question

the area of a square is 81cm2 . find it's perimeter and length of it's diagonal

Answer 1

Answer:

Step-by-step explanation:

Given :- Area=81cm²

Solution

We know area of a square is s²

Therefore s²=81

s=√81

s=9cm

Perimeter of square=4s

4×9=36cm

we know the formula for diagonal of a square is √2s²

√162=9√2 m

therfore perimeter=36cm

diagonal=9√2 cm

hope this helps

mARK ME AS THE bRAINLIEST

Answer 2

Answer:

Step-by-step explanation:

Area of square =81cm^2

Side of square =√81

= 9 cm

Perimeter of square =4*side

=4*9= 36cm