Let r be the radius of the inscribed circle.
Calculating r.
√(5)² = (2r)²+r²
5 = 5r²
r = 1 unit.
Notice!
The square side is 4r.
Let a be the square side.
a = 4r
And r = 1 unit.
a = 4(1)
a = 4 units.
Therefore, total area of the composite plane shape is;
Area square with side 4 units.
= a²
= 4²
= 16 square units.
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