搜搜做题作业网做个锥形漏斗,请高人教我画下扇形图,谢谢!
来源：学生作业帮 编辑：搜搜做题作业网作业帮 分类：数学作业 时间：2024/08/11 18:15:32
做个锥形漏斗,请高人教我画下扇形图,谢谢!
制作一个上口直径381.5CM,下口直径50CM.坡高为150cm的圆锥形漏斗怎样画扇形图?
制作一个上口直径381.5CM,下口直径50CM.坡高为150cm的圆锥形漏斗怎样画扇形图?
制作一个上口直径d1=381.5CM,下口直径d2=50CM.坡高为h=150cm的圆锥形漏斗怎样画扇形图?扇形的大圆弧半径为R1,小圆弧半径为R2,弧所对的圆心角为A.
R1-R2=(h^2+((d1-d2)/2)^2)^0.5 =(150^2+((381.5-50)/2)^2)^0.5 =223.5466 A=PI*d1/R1=PI*d2/R2 d1/R1=d2/R2
R2=(d2/d1)*R1=(50/381.5)*R1
R1-R2=R1-(50/381.5)*R1=223.5466
381.5*R1-50*R1=223.5466*381.5=85283.01094
331.5*R1=85283.01094
R1=257.26CM
R2=(50/381.5)*R1=(50/381.5)*257.26=33.72CM
A=PI*d1/R1
=PI*381.5/257.26
=4.658707弧度
=4.658707*180/PI
=266.92度
R1-R2=(h^2+((d1-d2)/2)^2)^0.5 =(150^2+((381.5-50)/2)^2)^0.5 =223.5466 A=PI*d1/R1=PI*d2/R2 d1/R1=d2/R2
R2=(d2/d1)*R1=(50/381.5)*R1
R1-R2=R1-(50/381.5)*R1=223.5466
381.5*R1-50*R1=223.5466*381.5=85283.01094
331.5*R1=85283.01094
R1=257.26CM
R2=(50/381.5)*R1=(50/381.5)*257.26=33.72CM
A=PI*d1/R1
=PI*381.5/257.26
=4.658707弧度
=4.658707*180/PI
=266.92度