This is just an example. There are many solutions to this problem.
You have to substitute y, x, the square root, and the pi.
Now, substitue y and x and the problem would look like this:
$$\frac{yx2}{\sqrt\pi}=\frac{2*3*2}{\sqrt\pi}$$
Now, substitute the square root.
$$\frac{2*3*2}{\sqrt4\pi}$$
Now, solve the expression.
$$\frac{2*3*2}{\sqrt4\pi}\\\\=\frac{12}{\sqrt4\pi}\\\\=\frac{12}{2\pi}\\\\=18.8495559215387594$$
So, $$18.8495559215387594$$ is the answer.
But, you would want to round that.
So, when you round that, the answer is $$18.8$$.
Hope it helps!
