- Maths Help
- AlgebraToggle Dropdown
- DecimalsToggle Dropdown
- Place value
- Comparing and ordering decimals
- Rounding to a place
- Significant figures
- Standard form and engineering notation
- Adding decimals
- Subtracting decimals
- Multiplying decimals
- Dividing decimals
- Converting decimals to fractions
- Converting decimals to percents
- Converting between decimals, fractions and percents
- Ordering decimals, fractions and percents

- FractionsToggle Dropdown
- Understanding fractions
- Simplifying (reducing) fractions
- Equivalent fractions
- Comparing fractions
- Ordering fractions
- Mixed numbers and improper fractions
- Adding fractions
- Subtracting fractions
- Adding and subtracting mixed numbers
- Multiplying fractions
- Dividing fractions
- Multiplying and dividing mixed numbers
- Converting fractions to decimals
- Converting fractions to percents
- Converting between fractions, decimals and percents
- Ordering fractions, decimals and percents

- IntegersToggle Dropdown
- Measurement
- Metric units of measure
- Perimeter of squares, rectangles and triangles
- Circumference of circles
- Area of squares, rectangles and triangles
- Area of circles
- Surface area of cubes, cuboids and triangular prisms
- Surface area of cylinders
- Volume of cubes, cuboids and triangular prisms
- Volume of cylinders, cones, spheres and pyramids

- PercentsToggle Dropdown
- StatisticsToggle Dropdown
- TrigonometryToggle Dropdown

In this module, you can study how to find the surface area of a cube, a cuboid (or rectangular prism) and a triangular prism.

The above video shows a teacher explaining how to find the surface area of a rectangular prism.

The video above is a visual explanation about how people figured out the formulas for the surface area of rectangular and triangular prisms and cylinders.

The surface area formulae for all prisms and cylinders are the same. They are all (two x the area of the base) plus (the perimeter of the base x the height of the object).

Even though a prism is a three-dimensional object, its surface area is two-dimensional.

- Study how to find the surface area of cubes and cuboidsRead about how to calculate the surface area of cuboids and cubes, watch an animation, then try to figure out the surface area of the prism. You can also practice finding the surface area of objects with different side lengths - the interactive program will let you know how you're doing!
- Read about surface area of cubesThis page from basic-mathematics.com has a crystal clear explanation about how to find the surface area of a cube. The explanation if followed by worked examples.
- Read about surface area of cuboidsBasic-mathematics.com offers a straightforward explanation followed by worked examples.

Use these search terms to find additional resources:

*surface area of cubesurface area of cuboidsurface area of rectangular prismsurface area of triangular prism*