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Mathematics in the fifth grade of primary school: calculate the area of the colored part in each of the following figures.
1.

Square+semicircle

Semicircle radius:1.2÷ 2 = 0.6m.

3. 14×0.6×0.6÷2+ 1.2× 1.2 = 2.0052 m2。

2.

Large semicircle-small semicircle

Radius of small semicircle: 6÷2=3 decimeters.

3. 14×(6×6-3×3)÷2=42.39 square decimeter.

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