Calculating blue area.
It is;
Area square with side length 3 cm + Area semi circle with radius 1 cm + Area semi circle with radius 2 cm.
= (3*3)+(π*½*1²)+(π*½*2²)
= 9+½(π)+2π
= ½(18+π+4π)
= ½(18+5π) cm²
= 16.853981634 cm²
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