# Cuboid Surface Area Calculator

Are you at a loss as to **how to calculate the surface area of a cuboid**? Our *cuboid surface area calculator* will help you to sort out any questions or doubts you may have quickly and easily. **Keep reading to learn:**

- The meaning of cuboid;
- How many vertices a cuboid has;
- How to use our surface area of a cuboid calculator;
- The surface area of a cuboid formula; and
- How to find the surface area of a cuboid manually.

## What does the word cuboid mean?

A cuboid is **a solid convex shape with each of its six faces shaped like a rectangle. It is also known as a rectangular prism.** Some good real-world examples of cuboids are:

- A book;
- A mattress; and
- A brick.

## How many vertices does a cuboid have?

A cuboid has **eight** vertices. The vertices of a cuboid all form angles of 90 degrees.

## How to use this surface area of a cuboid calculator

To use the **surface area of a cuboid calculator**, enter the following:

- Length
- Width; and
- Height of the cuboid.

Our calculator will immediately return the total surface area of the solid.

Keep in mind you can use any units you wish - our tool will deal with it.

## How to find the surface area of a cuboid

To find the surface area of the cuboid(`s`

), you first need to:

- Know the length (
`l`

), width (`w`

), and height (`h`

) of the shape. - Use the surface area of a cuboid formula:

- Substitute the values for length, width and height - say
`10`

,`7`

, and`8`

cm, respectively. Then solve the equation

- Then solve the equation:

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## FAQ

### How do I find the length of a cuboid from it's surface area?

Let's assume that the surface area, height, and width are `288`

, `4`

, and `6 cm`

, respectively. **Here is what we do:**

- Use the surface area formula:

**s = 2(l×w + w×h + l×h) sq units**. - Make
`l`

the subject of the formula:

**l = (s/2 - wh)/(w+h) units**. - Substitute the values:

**= (288/2 - 6 × 4)/(4+6) cm**. - Solve

**=( (144 - 24) / 10) cm**.

**=120/10 cm**.

**=12 cm**.