Math.help pleaseA circle has an area of M cm2 and a circumference of N cm.If M/N= 20,what is the radius of the circle,in cm?

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 12:30:13

Math.help pleaseA circle has an area of M cm2 and a circumference of N cm.If M/N= 20,what is the radius of the circle,in cm?
Math.help please
A circle has an area of M cm2 and a circumference of N cm.If M/N= 20,what is the radius of the circle,in cm?

Math.help pleaseA circle has an area of M cm2 and a circumference of N cm.If M/N= 20,what is the radius of the circle,in cm?
because 2*π*r=N
π*r*r=M
so M/N=r/2=20
r=40cm

M=40cm N=2cm

area=Pie r2 ~~~
circumference= 2 pie r
pie r2 除以 2 pie r = r 除以 2
M/N=20 therefore r/2=20 r=40 cm

Math.help pleaseA circle has an area of M cm2 and a circumference of N cm.If M/N= 20,what is the radius of the circle,in cm? help others with math, Help,help,me,help my math help（ ）to the cake,pleaseA.myself B.us C.yourself D.me为什么选C? help me with my math 的翻译 Can you help me my math?改错 can you help me about math?thanks! 请模仿help with math写几句, Can you help the children___their math? CI CI I turn to my math teacher.（同义句） I _____ my math teacher help.i figure和math有什么区别吗?figure:名词 math：名词 Help! 英语翻译（ ）the teacher's help,my math( )( )( ) Bob,can you help me with this math p_______. I can help you with your math改为祈使句 英语 my brother needs help ( ) his math 说明理由! Can you help me____my math?用适当的介词填空 Can you help me?I have trouble_______out the math problem.