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Mathematics: Post your doubts here!

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That would probably get you a right answer wrong working mark. The correct method is to calculate the volume scale factor (k^3) and use that to find the area scale factor (k^2)

k^3 = 1458/3456
k^3 = 27/64
k = 3/4
k^2 = 9/16

Hence the surface area of the smaller shape is
A = 1024*9/16 = 576cm^2
how did u do this? can u plzz explain again.
 
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