Answer:
24 square inches
Explanation:
Required number of square inches of cardboard =
=area of central square+
4 x area of each triangle shape
=2 x 2 + 4 x { 1/2 x 2 x 5 }
= 4 + 4 x {5}
= 4 + 20
= 24 square inches
9 square
Hope this helps
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