Question

if the area of a rectangle is320 cm which is equal to 80% of the area of a square then the side of the square is​

Answer 1

Answer:

The length of one side of the square is 20 centimeters.

Step-by-step explanation:

Here, 80% is equal to 320 cm. So, to find out the area of the square, we have to do :

80% = 320 cm

1% = 320 cm ÷ 80

    = 4 cm

100% = 4 cm X 100

         = 400 cm

The area of the square is 400 centimeters.

Now, to find the length of one side of the square, we have to find out the square root of 400.

$\sqrt{400}$ = 20 cm.

Therefore, the length of one side of the square is 20 centimeters.

Answer 2

Answer: Let the area of the square be x

therefore, 80/100* x = 320cm²

            or, x = 400 cm²

   so, we know that, Area of a square = side² = 400 cm

therefore, side of square = 20 cm.

Hope this helps!