AI generatedGeometry and measuresKS3 / GCSE

Surface area of a prism

Surface area of a prism.

  • Count every exposed face. State whether a flat base is included.
  • For a prism, use both end faces and the rectangular side faces.
  • Use squared units. A cone’s curved area uses slant height, not perpendicular height.

Example 1

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.

Example 2

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.

Your turn

Question 1

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Check answer
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.
Question 2

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Check answer
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.
Question 3

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Check answer
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.
Question 4

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Check answer
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.
Question 5

Find the total surface area, including every base. Give an exact answer.

Triangular prism, not to scaleNot to scale
Check answer
Choose the formula for this shape.Substitute the labelled dimensions. Keep π exact when it appears.