(a) Draw an isometric representation of a cuboid measuring 6 cm by 4 cm by 3 cm. Use the grid below. [2]
(b) Calculate the volume of the cuboid. Give the units of your answer. [3]
Mark scheme (a)
Scheme
Marks
Comments
Correct cuboid
B2
For B2, their cuboid must have edges along or parallel to the 3 directions usually associated with isometric paper (the two diagonals and the vertical). B1 for any one edge dealt with correctly for all its three occurrences in a cuboid. For any mark to be awarded the line must go ‘through the dots’ AND have both ends ‘on a dot’. Ignore attempt at handling ‘hidden lines’.
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