Question

The perimeter of a square whose area is 81 cm2 is ________​

Answer 1

Step-by-step explanation:

area of the square = 81cm^2 so the length of each side will be 81 under root = 9cm then the perimeter will be 9 X 4 = 36 cm

please mark as BRAINLIEST

Answer 2

Answer:

here's your answer

= 324 sq. cm

Step-by-step explanation:

here we have to see how many sides are there in a square

we all know that square has = 4 sides

now we have the value of 1 side

1 side = 81 cm

4 sides = 81 × 4

= 324 sq. cm

we can use an another method

= 4 × side

= 4 × 82

= 324

Things to know :-

1 :- perimeter of rectangle :- 2 × ( Length + Breadth )

2 :- area of rectangle :- Length × Breadth

3 :- perimeter of square :- 4 × side

4 :- area of square :- Side × Side