Question

The sum of the radii of two circles is 7 cm, and the difference of their
circumferences is 8 cm. Find the circumferences of the circles.
in vrbaceuter and inner pada are resnortively​

Answer 1

Answer:

Explanation:

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