Question

The sun of diameters of two circle is 280cm and the difference of their circumferences is 88cm .find the difference of the radii of two cuticle
and the radii of two circles








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Answer 1

Answer:

Let the diameters of the circles be "D" and "d"

nd radius be "R" nd "r"

then,. a/q.

D +d = 280 cm

=>> R + r = 140.(1).

now,.

2πR - 2πr = 88.

=>> 2π(R-r) = 88..

=>> R - r = 14.(2)

adding (1) nd (2).We get,

2R = 154.

=>> R = 77 cm.

nd from (1)

=>> r = 63 cm.

hence, the larger radii is 77 cm.

Step-by-step explanation: