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Ratling [72]
3 years ago
10

In the Changing Dimensions of 3D Figures

Mathematics
1 answer:
den301095 [7]3 years ago
7 0

Answer:factor of 9

Step-by-step explanation:

Given

prism were changed by a scale factor of 3

Suppose prism is rectangular in shape

So surface are is S.A.=2(lw+wb+lb)

Where l=length

w=width

b=breadth

So new length,breadth and width is

l'=3l

w'=3w

b'=3b

S.A.=2(3\times 3lw+3\times 3wb+3\times 3lb)

S.A.=2\times 3^2(lw+wb+lb)

S.A.=3^2\times 2(lw+wb+lb)

So new surface area would change by a factor of 9

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