diff --git a/src/fabelous_math/cpp/functions/bindings/pi_bindings.cpp b/src/fabelous_math/cpp/functions/bindings/pi_bindings.cpp
new file mode 100644
index 0000000..c6ddb61
--- /dev/null
+++ b/src/fabelous_math/cpp/functions/bindings/pi_bindings.cpp
@@ -0,0 +1,28 @@
+#include <Python.h>
+#include "pi.hpp"
+
+static PyObject* approximate_pi_wrapper(PyObject* self, PyObject* args) {
+    long long number;
+    if (!PyArg_ParseTuple(args, "L", &number)) {  // Changed to 'L' for long long
+        return NULL;
+    }
+    double result = pi::approximate_pi(number); // Change to double
+    return PyFloat_FromDouble(result); // Return the actual result as a float
+}
+
+static PyMethodDef PiMethods[] = {
+    {"approximate_pi", approximate_pi_wrapper, METH_VARARGS, "Calculate the approximation of pi"},
+    {NULL, NULL, 0, NULL}
+};
+
+static struct PyModuleDef pi_module = {
+    PyModuleDef_HEAD_INIT,
+    "pi",
+    "Module for calculating the approximation of pi",
+    -1,
+    PiMethods
+};
+
+PyMODINIT_FUNC PyInit_pi(void) {
+    return PyModule_Create(&pi_module);
+}
\ No newline at end of file
diff --git a/src/fabelous_math/cpp/functions/pi.cpp b/src/fabelous_math/cpp/functions/pi.cpp
new file mode 100644
index 0000000..fa87882
--- /dev/null
+++ b/src/fabelous_math/cpp/functions/pi.cpp
@@ -0,0 +1,27 @@
+#include "pi.hpp"
+#include <cmath>
+#include <iostream> // Include iostream for debugging
+
+long double pi::approximate_pi(long long number) {
+    long long lange = number - 2;
+    long double a = 0, b = 0;
+
+    // Compute summation for 'a'
+    for (long long k = 1; k <= lange; ++k) {  // Changed to include lange
+        long double value = std::sqrt(number * number - k * k);
+        a += value;
+    }
+
+    // Compute summation for 'b'
+    for (long long j = 0; j <= lange; ++j) {  // Changed to include lange
+        long double value = std::sqrt(number * number - j * j);
+        b += value;
+    }
+
+    // Normalize the results
+    b = 4.0 / (number * number) * b;
+    a = 4.0 / (number * number) * a;
+
+    long double result = (a + b) / 2;
+    return result;
+}
\ No newline at end of file
diff --git a/src/fabelous_math/include/pi.hpp b/src/fabelous_math/include/pi.hpp
new file mode 100644
index 0000000..b5f5f31
--- /dev/null
+++ b/src/fabelous_math/include/pi.hpp
@@ -0,0 +1,5 @@
+#pragma once
+
+namespace pi {
+    long double approximate_pi(long long number);
+}
\ No newline at end of file