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Question-65239




Question Number 65239 by Tawa1 last updated on 26/Jul/19
Commented by mr W last updated on 26/Jul/19
9(D−9)=15^2   D=((15^2 )/9)+9=34
9(D9)=152D=1529+9=34
Commented by Tony Lin last updated on 26/Jul/19
Commented by Tawa1 last updated on 26/Jul/19
God bless you sir
Godblessyousir
Commented by Tawa1 last updated on 26/Jul/19
How is     9(D − 9) = 15^2   sir
Howis9(D9)=152sir
Commented by Tawa1 last updated on 26/Jul/19
I combine sir tony diagram and sir ajfour solution so i understand  very well
Icombinesirtonydiagramandsirajfoursolutionsoiunderstandverywell
Commented by mr W last updated on 26/Jul/19
Commented by mr W last updated on 26/Jul/19
CD=diameter=D  EB=30/2=15  ((CE)/(EB))=((EB)/(ED))  ⇒(9/(15))=((15)/(D−9))  ⇒9(D−9)=15^2
CD=diameter=DEB=30/2=15CEEB=EBED915=15D99(D9)=152
Commented by Tawa1 last updated on 26/Jul/19
Thanks for your time sir. God bless you
Thanksforyourtimesir.Godblessyou
Answered by ajfour last updated on 26/Jul/19
(r−9)^2 +15^2 =r^2   ⇒  18r=225+81  ⇒ r=((306)/(18))=17   ⇒ D=34cm.
(r9)2+152=r218r=225+81r=30618=17D=34cm.
Commented by Tawa1 last updated on 26/Jul/19
God bless you sir
Godblessyousir

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