the sum difference of the radii of two circles is 140 `cm and the difference of the circumference is 88 cm. find the diameters of the circle
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Let radius of circles be r1 and r2
Given sum of radius = 140cm
r1+r2=140 .......(i)
difference in circumferences=88
2πr1-2πr2=88
r2=63 cm in (ii) r1=63+14=77cm
Diameter of circle (i)=2r1=2x77=154cm
Diameter of circle (i)=2r2=2x63=126cm
Given sum of radius = 140cm
r1+r2=140 .......(i)
difference in circumferences=88
2πr1-2πr2=88
r2=63 cm in (ii) r1=63+14=77cm
Diameter of circle (i)=2r1=2x77=154cm
Diameter of circle (i)=2r2=2x63=126cm
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