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Total Surface Area of a Cuboid

a Two cubes o...

Question

(a) Two cubes of dimensions $2 c m \times 2 c m \times 2 c m$ are placed side by side. What is the length of the resulting cuboid?

(b) How many faces, vertices and edges does a triangular prism have?

[3 MARKS]

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Solution

Each part: 1.5 Marks

(a) As it is clearly evident from the figure, when we place two cubes side by side, their length gets added, but there is no change in the other dimensions.

Length = 2 + 2 = 4 cm

Breadth = 2 cm

Height = 2 cm

(b)

Number of Faces = 5

Number of Vertices = 6

Number of Edges = 9

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