Rectangular prism — Grade 6 Math, what it means and where it is taught
A box — six rectangular faces meeting at right angles.
Taught in Grade 6 Math.
Where it is taught
Practise this idea
3 questions in the course bank use Rectangular prism, in Plane Sections of 3-D Figures, Volume & Surface Area of 3-D Figures.
Problem 1
A 5 × 4 × 3 rectangular prism is sliced parallel to its 5 × 4 face. Find the area of the cross section.
Worked answer
20
The cross section is a 5 × 4 rectangle
Area = 20, the same at every depth.
Problem 2
Find the volume of a 5 × 4 × 3 rectangular prism.
Worked answer
60
5 × 4 × 3 = 60
Problem 3
Find the surface area of a 5 × 4 × 3 rectangular prism.
Worked answer
94
2(5 × 4) = 40
2(5 × 3) = 30
2(4 × 3) = 24
40 + 30 + 24 = 94