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このような図形の面積を求める公式です⬇
(半円の面積)-(正方形の面積)
この問題に公式を当てはめると、
(5×5×3.14÷2)-(5×5)=39.25-25
=14.25
よって14.25cm²となります
間違っていたらすみません💦
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