Step 1 :The marginal cost of producing the \(x\) th baseball bat is given by: \(C'(x) = 25 + \frac{5x}{(x^2 + 1)^2}\)
Step 2 :To find the total accumulated cost for producing the first 10 baseball bats, we need to integrate the marginal cost function from 1 to 10.
Step 3 :The integral of the marginal cost function will give us the total cost function.
Step 4 :Evaluating the total cost function at 10 and subtracting the value at 1 will give us the accumulated cost for the first 10 bats.
Step 5 :The total accumulated cost for producing the first 10 baseball bats is \(\boxed{226.23}\)