Question

the area of square is 400 cm2. then what is twice of perimeter​

Answer 1

Area of square= side^2

400=side^2

√400=side

side=20

2×perimeter of square

2×(4×side)

2×(4×20)

2×80

160

please follow me

Answer 2

Answer:

160 cm

Step-by-step explanation:

Area of square = 400cm2

               Side =  $\sqrt{400}$ cm

                        = 20 cm

Perimeter of square= 4* side

                                = 4*20

                                = 80

Twice the perimeter = 2*80

                                 =160 cm