Adding Faces: Mixed Review on Surface Area of Prisms

Mathematics
Grade 7
11 questions
~22 mins
1 views0 downloads

About This Worksheet

This worksheet reviews adding faces in the surface area of prisms, including procedural practice, reasoning, and real-world applications.

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Adding Faces: Mixed Review on Surface Area of Prisms

Subject: MathematicsGrade: Grade 7
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Untitled Worksheet

Grade Grade 7
A

Practice Questions

Answer all questions. Show your working in the grid spaces provided.
1.
Calculate the total surface area of a rectangular prism with length 8 cm, width 5 cm, and height 4 cm by adding the areas of all faces.
[3 marks]
2.
A triangular prism has a rectangular base of 6 cm by 4 cm, and a height of 7 cm. If the three rectangular faces are added, what is the total area of these faces?
[3 marks]
3.
Construct a cube with a side length of 3 cm. Add the areas of 4 faces. What is the total area you get?
[2 marks]
4.
A pentagonal prism has a base area of 20 cm² and five rectangular faces each 10 cm long and 3 cm wide. Add the areas of these five rectangular faces.
[3 marks]
5.
A cylinder's surface is made up of two circular faces and the curved surface. If the area of the curved surface is 94.2 cm², and both circular faces are added, what is the total area of the three faces?
[3 marks]
6.
A rectangular prism has a length of 10 cm, width 4 cm, and height 6 cm. If you add the areas of the four side faces (excluding the top and bottom), what is their total?
[3 marks]
7.
A right prism has base side lengths of 5 cm, 7 cm, and height 10 cm. How much area is added if you include the three rectangular faces connecting these sides?
[3 marks]
8.
A rectangular prism has a length of 12 cm, width of 3 cm, and height of 5 cm. Add the areas of all four side faces. Show your working.
[4 marks]
9.
A triangular prism has rectangular faces with areas of 15 cm², 20 cm², and 25 cm². What is the total area of these faces?
[3 marks]
10.
A rectangular prism's two opposite side faces each have an area of 24 cm². The other two side faces each have an area of 16 cm². What is the total area of these four faces?
[3 marks]
11.
Identify and correct the mistake in this calculation: "Total surface area of a cube with side 4 cm is 96 cm²".
[2 marks]

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Details

Created
1/1/2026
Updated
1/1/2026
Type
worksheet