# Find the Surface Area of Cuboids

In this worksheet, students will calculate the surface area of cuboids given their dimensions.

Key stage:  KS 3

Curriculum topic:   Geometry and Measures

Curriculum subtopic:   Derive and Apply Formulae

Popular topics:   Area worksheets

Difficulty level:

#### Worksheet Overview

In this activity, we will find the surface area of cuboids from their dimensions.

Example

To find the surface area of a cuboid, find the areas of the six rectangular faces and add these areas together.

The six faces of a cuboid will always have three pairs of congruent (identical) rectangular faces.

Area of top and bottom faces = 2 x (4 x 3) = 24 cm2

Area of front and back faces = 2 x (5 x 4) = 40 cm2

Area of left and right faces = 2 x (5 x 3) = 30 cm2

Total surface area = 24 + 40 + 30 = 94 cm2

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