2
Question
If R+r=13, and R-r=7, then find R and r.
If R+r=13, and R-r=7, then find R and r.
Open in App
Solution
R + r = 13-------------(1)
R - r = 7 --------------(2)
(1) + (2) ==> 2R = 13 + 7 = 20
R = 20 / 2 = 10
from (1) ,
10 + r = 13
r = 13 - 10 = 3
R - r = 7 --------------(2)
(1) + (2) ==> 2R = 13 + 7 = 20
R = 20 / 2 = 10
from (1) ,
10 + r = 13
r = 13 - 10 = 3
Suggest Corrections
1
