Edge length — Grade 6 Math, what it means and where it is taught
The measurement along one side.
Taught in Grade 6 Math.
Where it is taught
Practise this idea
2 questions in the course bank use Edge length, in Volume & Surface Area of 3-D Figures, Volume with Fractional Edges.
Problem 1
A cube has volume 216 cm3. Find its surface area.
Worked answer
216
63 = 216, so the edge is 6 cm
SA = 6 × 62 = 6 × 36 = 216 cm2
The numbers match here by coincidence — the units do not.
Problem 2
A cube has volume 125 cm³. Find its edge length.
Worked answer
5
53 = 125