Question

The sum of the radius of two circles is 7cm and the difference of their circumference is 8cm find the circumference of the circles

Answer 1

Solution:
r1 + r2 = 7
also
2(pi)(r1-r2) = 8
(r1-r2) = 8/(2.pi)
solving
we get

r1 = (4+7.pi)/(2.pi)
r2= (7.pi-4)/(2.pi)

so
c1= 4+7pi
c2= 7pi-4

hope that helps!!

Answer 2

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