# Surface Area of a Rectangular Prism Calculator

Solving a rectangular prism to find its area and volume isn’t an easy task as you have to perform different operations, get multiple values, and deal with complex steps. You can’t do this unless you love Mathematics and have proficient skills to work in this field. If you are a student and looking to make the process of area calculation of this figure easier, you should use the surface area of a rectangular prism calculator.

This online handy tool is useful for students, Mathematical professionals, and others related workers. With the help of this maths calculator, you can easily find the surface area of any rectangular prism. Doesn’t matter whether you have small values or complex ones, you will find this tool suitable for area calculation. Let us show you a complete overview of this tool and the manual approach for this calculation.

## Surface Area Definition

Surface area is the length and width (area) of the surfaces of any figure. Shortly, we can say that the region covered by any figure will be called its surface area. Every solid figure covers a surface area that can be calculated using its shape category and dimensions.

It is the calculation of the region in two dimensions only that are length and width. In simple words, we can say that surface area is a 2-D related calculation that we can do on any solid figure in Geomtery or in our real life.

## Rectangular Prism Definition

A rectangular prism is a specific 2-D solid figure in geometry that has 6 rectangular faces. The opposite faces of a rectangular prism are equal to each other which means that it fulfills the basic property of the rectangle.

That’s why it is called a rectangular prism instead of a standard prism. A simple example of this type of prism is a regular box we see in our daily lives. In your childhood, you must have seen houses on TV with rectangular roofs. If we remove the roof of that house, the remaining part of the house will also be a rectangular prism.

This particular figure has a wide scope, in different professional Mathematics fields including engineering, architecture, and others. Many daily life products are designed on this pattern after comprehensive calculation of measures like area, volume, and others.

Apparently, this figure has 6 faces but there are three different lengths because two opposite lengths are the same.

### Surface area of a rectangular prism formula

Unlike a rectangle, it is a rectangular prism has a different formula for the surface area of a rectangular prism. No doubt, it is similar to the standard formula of a rectangle but has some changes in it. Here is the formula you can use to find the surface area of this type of prism.

Surface area of a rectangular prism = 2 (lw + wh + lh)


In the above formula,

• “l” shows the length of the rectangular prism.
• “h” represents the length of the rectangular prism.
• T“w” represents the width of the rectangular prism.

### How to find the Surface area of a rectangular prism?

To find the surface area of a rectangular prism, you only have to put the values in the above formula. As you can see, it will be difficult because you have to multiply and add the answers one by one. So, we have solved an example here to let you understand the process.

Find the surface area of a rectangular prism having length, width, and height equal to 3m, 5m, and 7m.

As we know,

Surface area of a rectangular prism = 2 (lw + wh + lh)

So,

= 2 [(3 x 5) + (5 x 7) + (3 x 7)] sq. m

= 2 [15 + 35 + 21] sq. m

= 2  sq. m

= 142 sq. m


### How to use the surface area of a rectangular prism calculator?

It is not compulsory that you have simple values all the time to find the surface area of a rectangular prism. You may have complex or bigger measurements to deal with. In this regard, you should use this tool by Calculator’s Bag. Follow these steps to go ahead and find the area using this tool.

• Enter the measurement of the length in the first input box
• Write the measure of the width in the second input box
• Enter the measure of the height in the first input box
• This calculator will automatically show you the answer for the surface area of the rectangular prism

### FAQ | Surface Area of a Rectangular Prism Calculator

How do you get the surface area of a rectangular prism?

To find the surface area of a rectangular prism, you have to use the following formula.

Surface area of a rectangular prism = 2 (lw + wh + lh)


What is a rectangular prism?

A rectangular prism is a solid 2-D figure with 6 equal faces like a rectangle.

How does the surface area of a rectangular prism calculator work?

This surface area of a rectangular prism calculator has an advanced algorithm with pre-programmed formula according to which it finds the final answer.

Can the surface area of a rectangular prism calculator handle rectangular prisms with fractional dimensions?

No, this calculator can’t handle the fractional dimensions. You have to divide the fraction to get the answer in decimals before using this online calculator.

What are the applications of the surface area of a rectangular prism calculator?

Using this calculator, you can find the area of this shape that will help you in many daily life projects. You can use it for the calculation of the area of a house you are going to design in this shape.