1.

Two Circles Touch Each Other Externally. The Distance Between Their Centres Is 14 Cm And The Sum Of Their Areas Is 130 Cm^2. Find Their Radii?

Answer»

Lets assume the radius of 1st circle = x CM.

so, the radius of 2ND circle = (14-x)cm.

(pi*x*x)+(pi*(14-x)*(14-x))=130

By SOLVING above eq. 

x = 11 or 3.

Lets assume the radius of 1st circle = x cm.

so, the radius of 2nd circle = (14-x)cm.

(pi*x*x)+(pi*(14-x)*(14-x))=130

By solving above eq. 

x = 11 or 3.



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