Two cubes of side 4cm each are join together. find the difference in surface area when there where separated and join
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Answer:
Step-by-step explanation:
Surface areas of the 2 cubes when apart :
6a²+6a²
=12a²
Surface areas of 2 cubes when joined :
2 x 6a² - covered area of both cubes
12a²- 2a²
10a²
Hence difference in their surface area = 12a²-10a²
=2a²
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