Question

find the radius of a circle whose circumference is equal to the sum of the circumference of two circles of radii 15 cm and 18 cm ?

Answer 1

let the required radius be r


then , 2πr = 2π(15 ) + 2π(18)



r = 15+18

= 33

be brainly

Answer 2

Let the radii of the circle be r cm
=> 2*22/7*r= (15*7/2*22) + (18*7/2/22)
OR,44*7*r =7/2*22*(18+15)
OR, r = 18+15=33.

HOPE IT HELPS ✌.