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Surface Area of Cubes and Rectangular Prisms Calculator

QUICK LINKS


Surface Area of Cubes and Rectangular Prisms Calculator

Surface Area of Cubes and Rectangular Prisms

CALCULATOR

Surface Area of Cubes & Rectangular Prisms Calculator

What is your shape?

Step 1. Unwrap the cube.

This gives us our net:

Step 2. Calculate the area of each part of the net that makes up the cube.

Sides with the same color mark are the same size 🎉.
ShapeArea
1
(Square)
2
(Square)
3
(Square)
4
(Square)
5
(Square)
6
(Square)

Step 3. Add up the areas of the shapes that make up the cube.

The surface area of this cube is .
We have some questions for you! Help us out through this
INTRO
The surface area of a 3D shape is equal to the sum of the areas of all the faces (sides) of that shape. A helpful way to think about it is:
surface area = sum of face areas
We can also think about surface area in terms of gifts! The surface area is like the minimum amount of wrapping paper we need to prep a gift for its surprise reveal. 🤩If we were to unwrap a gift, the amount of wrapping would be equal to the surface area of the object it was covering.

Pick a gift shape to unwrap:

When we “unwrap” a 3D shape, we get what we call a net. A surface area net shows us the different 2D shapes that make up the faces of the 3D shape.
We can then find the area of each face and then add them all together to find the total surface area.
Check out our
Calculator
or explore our
Lesson
and
Practice
sections to learn more about how to find the surface area of cubes and rectangular prisms and test your understanding.

You can also use the Quick Links menu on the left to jump to a section of your choice.

You can also use the Quick Links dropdown above to jump to a section of your choice.

KEY STEPS

How to Find Surface Area of Cubes and Rectangular Prisms

Shape

Step 1. Unwrap the cube.

Step 2. Calculate the area of each part of the net that makes up the cube.

Squares 1 - 6

Step 3. Add up the areas of the shapes that make up the cube.

LESSON
Surface Area of Cubes
PRACTICE
Surface Area of Cubes
LESSON
Surface Area of Rectangular Prisms
PRACTICE
Surface Area of Rectangular Prisms
CONCLUSION
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