Question

CLASS 7 MATHS

CH 6

A LADDER 13M LONG REACHES A WINDOW WHICH IS 5M ABOVE THE GROUND, ON ONE SIDE OF THE STREET

Answer 1

You are to apply Pythagoras theorem and u will get ur ans.

13×13= 5×5 + B^2

169 = 25 + B^2

169-25= B^2

144= B^2

√144= B

12m = B

this is ur ans....