Xiao Li wants to use a square piece of paper with an area of 400cm and cut a rectangular piece of paper with an area of 300cm along the side, Make the ratio of length to width 3:2, please explain whether Xiaoli can use this piece of paper to cut rectangular pieces

Xiao Li wants to use a square piece of paper with an area of 400cm and cut a rectangular piece of paper with an area of 300cm along the side, Make the ratio of length to width 3:2, please explain whether Xiaoli can use this piece of paper to cut rectangular pieces

The side length of square paper is 20cm
Let the length be 3x and the width be 2x
Do 6x ^ 2 = 300, x ^ 2 = 50, x = 5, root 2
Length 15, root 2 > 20, width 10, root 2