5.24÷3.14=1.67m
1.67÷2=0.835m
由S=πr²得S=3.14×0.835²=2.189m²
2.189-25%×2.189=1.64m²
答:种玫瑰花的面积是1.64平方米
一个圆形花圃的周长为5.24米,花圃面积的25%种月季花,其余的种玫瑰花,种玫瑰花的面积是多少平方米?
一个圆形花圃的周长为5.24米,花圃面积的25%种月季花,其余的种玫瑰花,种玫瑰花的面积是多少平方米?
数学人气:105 ℃时间:2019-11-06 04:19:45
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