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steposvetlana [31]
4 years ago
9

Can you all please help me with a and b ​

Mathematics
1 answer:
Lunna [17]4 years ago
3 0

Answer:

Step-by-step explanation:

a.

area of one face=3²=9 units²

b.

whole surface area=6×3²=6×9=54 units²

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Vanyuwa [196]
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