3.14xX²+3.14x(X÷2)²=100
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/06 17:38:47
x)334PS64s8NMR>Jlha.H3_6N~hγ66=dG+l.tD
=@.DO紽:hh}!2c=D IuR(v"nCmC}vd%X
!Y0Q$wE\\g
l0Dn~OID0IPH-DFS=sS$
3.14xX²+3.14x(X÷2)²=100
3.14xX²+3.14x(X÷2)²=100
3.14xX²+3.14x(X÷2)²=100
3.14xX²+3.14x(X÷2)²=100
这道题,想求的不是x=多少,而是想求大圆面积或者小圆面积是多少吧?
3.14xX²+3.14x(X÷2)²=100
3.14xX²+3.14xX²÷4=100
(1+1/4)3.14xX²=100
3.14xX²=80
大圆面积:80
小圆面积:20
3.14xX²+3.14x(X÷2)²=100
3.14×5/4x²=100
x²=80/3.14
x=±5.0475