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3 years ago

15

What is the ratio for the surface areas of the rectangular prisms shown below, given that they are similar and that the ratio of

their edge lengths is 3:1

1 answer:

Harrizon [31]3 years ago

4 0

Answer:

9 : 1

Step-by-step explanation:

given a linear ratio = a : b, then the corresponding area ratio is

a² : b²

Here the linear ratio of their edges = 3 : 1, hence

ratio of surface areas = 3² : 1² = 9 : 1

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