Question

the perimeter of a square whose area is 81sq cm is ____ cm

Answer 1

Solution :

Let side of the square = a cm

Area = 81 cm² [ given ]

=> a² = ( 9cm )²

=> a = 9cm

Now ,

perimeter ( P ) = 4a

= 4 × 9 cm

= 36 cm

••••

Answer 2

Answer:

324

Step-by-step explanation:

perimeter of square = 4a

                                 = 4 * 81

                                  =324