Question

7 sum solve it ans 21​

Answer 1

using pythagoras theorem

(15)2=(12)2+(x)2

225-144 = (x)2

81=(x)2

9 = x

in other triangle

(15)2= (9)2 + (y)2

225-81=(y)2

144=(y)2

12= y

x+y=AB

9+12=AB

21=AB