Help I can’t find the area

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asked Oct 1, 2019 48.7k views

1 Answer

Paolo Vigori · Answer 1 · 2019-10-04T11:02:28+0000

We have
two rectangles 71cm x 23cm
two rectangles 71cm x 28cm
two rectangles 23cm x 28cm

The surface area of this figure:

$A_S=2\cdot71\cdot23+2\cdot71\cdot28+2\cdot23\cdot28\\\\=3,266+3,976+1,288=8,530\ cm^2$

Answer: A. 8,530 cm².

Help I can’t find the area

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