大小两个圆重叠在一起,重叠部分占小圆的5分之2,占大圆的7分之1,那么小圆面积与大圆面积之比是多少

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(2/5)S小圆薯桐 = (1/7)S大圆

S小圆凯缺 ：S大圆 = (1/7)/(2/数孙坦5) = 5/14

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2/5 x = 1/7 y

x/y = 5/14

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5:14

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5:14

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