# Get Answers To Some Of The Surface Area Calculator's Concerns

**Allcalculator.net** is here to help address any concerns you may have regarding the **Surface Area Calculator**. With our user-friendly interface and accurate calculations, calculating surface areas has never been easier. Simply input the required dimensions, and let Allcalculator.net do the rest.

### What are the steps to use the surface area calculator?

Use this Surface Area Calculator to perform the easy calculation for you. The steps are as follows:

- Choose the shape from the drop-down menu
- Enter the value of the length and choose the unit of measurement from the drop-down menu
- The surface calculator generates the surface area value by illustrating your chosen shape.

### How to find the surface area of a triangular prism?

The formula for the surface area of a triangular prism is derived below. The lateral surface area is quite easy to calculate as it comprises three rectangles with one side length in common.

The formula is:

A(lateral) = a*h + b*h + c*h = h* (a + b + c)

A(lateral) = h*P

P – The perimeter of the base triangle

Now, calculate the area of the triangular base, which has several ways to do depending on the value. The common method to use Heron's formula is typically used when you have the values for all three sides of the triangle.

A(base) = 0.25* √(( a + b + c)*(-a + b + c)*(a – b + c)*(a + b + c)))

The final formula is here to find a triangular prism’s surface area is:

A = h*(a + b + c) + 0.5*√ ((a + b + c)*(-a + b + c)*(a – b + c)*(a + b + c))

A = A (lateral) + 2*A(base)

### How can you calculate the surface area of a sphere using a surface calculator?

The surface area of the sphere calculator is an online tool where you can calculate the exact surface area of the sphere. It gives you an exact result in a fraction of a second.

The formula for the **Surface Area** of a sphere = 4πr2 square units

The steps to use in the surface area of a sphere calculator are:

- Enter the given radius value in the input field
- Click on the solve button to get the sphere surface area
- Finally, the surface area of a sphere will be displayed in the output field