5. Hema was making a model, in which she placed 4 cubes each of edge 20
cm one above the other. Find the surface area of the resulting cuboid.
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Given : Hema was making a model, in which she placed 4 cubes each of edge 20 cm one above the other
To Find : surface area of the resulting cuboid
Solution:
Cube with edge 20 cm
Length = Breadth = Height = 20 cm
4 cubes each of edge 20 cm one above the other
Hence Length = Breadth = 20 cm
Height = 20 x 4 = 80 cm
Cuboid Dimensions
20 x 20 x 80
Surface Area = 2 ( 20 * 20 + 20 * 80 + 20 * 80)
= 2(400 + 1600 + 1600)
= 2(3600)
= 7200 cm²
surface area of the resulting cuboid. = 7200 cm²
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