This tool will calculate the total internal rate of return (TRIR) for your project investments.

## How to Use the TRIR Calculator

Follow these simple steps to calculate the TRIR:

- Enter your total revenue in the “Revenue ($)” field.
- Enter your total cost of goods sold in the “Cost of Goods Sold ($)” field.
- Enter your total operating expenses in the “Operating Expenses ($)” field.
- Enter the total depreciation in the “Depreciation ($)” field.
- Enter the total amortization in the “Amortization ($)” field.
- Enter the total tax expense in the “Tax Expense ($)” field.
- Click on the “Calculate” button.
- The result will be displayed in the “Result” field.

## How It Calculates the TRIR

TRIR (Total Revenue Indicator Ratio) is calculated using the following formula:

`TRIR = ((Revenue - Cost of Goods Sold - Operating Expenses - Depreciation - Amortization - Tax Expense) / Revenue) * 100`

This formula helps you determine the efficiency and profitability of your operations in percentage terms.

## Limitations

While this calculator provides a good estimate of TRIR, it has some limitations:

- It assumes all the input values are accurate and up-to-date.
- It does not account for non-operating income or expenses which might affect your overall profitability.
- It requires accurate input for all fields; otherwise, the result will not be reliable.

## Use Cases for This Calculator

### Use Case 1: Calculate the Area of a Triangle

Enter the base and height of the triangle to quickly find its area. The formula to compute the area is 1/2 x base x height.

### Use Case 2: Determine the Perimeter of a Triangle

Specify the lengths of all three sides of the triangle to calculate its perimeter. The perimeter is the sum of the lengths of all three sides.

### Use Case 3: Find the Missing Side of a Right Triangle

If you know two sides of a right triangle, you can use the Pythagorean theorem to find the length of the missing side. Simply input the known side lengths.

### Use Case 4: Calculate the Semi-Perimeter of a Triangle

To find the semi-perimeter of a triangle, input the lengths of its three sides. The semi-perimeter is half the sum of the lengths of all three sides.

### Use Case 5: Determine the Altitude of a Triangle

Input the base and the area of the triangle to calculate the altitude. Altitude is a line segment from a vertex perpendicular to the opposite side.

### Use Case 6: Calculate the Circumradius of a Triangle

Enter the lengths of the three sides of the triangle to determine its circumradius. The circumradius is the radius of the circumscribed circle of the triangle.

### Use Case 7: Find the Inradius of a Triangle

Input the lengths of the three sides of the triangle to calculate its inradius. The inradius is the radius of the inscribed circle within the triangle.

### Use Case 8: Determine the Angle Bisectors of a Triangle

Enter the three angle measures of a triangle to find the angle bisectors. Angle bisectors divide the opposite side in the ratio of the adjacent sides.

### Use Case 9: Find the Median of a Triangle

Input the lengths of the three sides of the triangle to compute its median. The median is a line segment from a vertex to the midpoint of the opposite side.

### Use Case 10: Calculate the Centroid of a Triangle

To determine the centroid of a triangle, input the coordinates of its three vertices. The centroid is the point of intersection of the medians of the triangle.