a cuboid measuring
20 CM by 10 cm by 4 cm is a constructed using a 2 centimetre how many cubes were needed
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Given : A cuboid 20 cm by 10 cm by 4 cm
Constructed using 2 cm side cubes
To Find : How many cubes were needed
Solution:
cuboid 20 cm by 10 cm by 4 cm
Cube 2 cm
20/2 = 10
10/2 = 5
4/2 = 2
Number of cubes required = 10 x 5 x 2 = 100
other method
Volume of cuboid - 20 x 10 x 4
= 800 cm³
Volume of a cube = 2 x 2 x 2 = 8 cm³
Number of cubes required = 800/8
= 100
100 cubes needed
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