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The two solids are similar and the ratio between the lengths of their edges is 2:9. What is the ratio of their surface areas? Can you also help me with the 2nd attachment, the question is on the picture?
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The two solids are similar and the ratio between the lengths of their edges is 2:9. What is the ratio of their surface areas?

Can you also help me with the 2nd attachment, the question is on the picture?

The two solids are similar and the ratio between the lengths of their edges is 2:9. What-example-1
The two solids are similar and the ratio between the lengths of their edges is 2:9. What-example-1
The two solids are similar and the ratio between the lengths of their edges is 2:9. What-example-2
User Oktieh
by
7.5k points

1 Answer

3 votes
Hello,

During a dilatation of ratio k (length ratio),
area are multiplied by k² and volume bu k^3.

A)
(2/9)²=4/81 answser A

B) (3/5)²=9/25 Answer D

User Carpy
by
8.2k points
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