Question

Are Z, Q closed with respect to multiplication ?​

Answer 1

IN ∆ ADE

ad²+ac²=15

9²+ac²+15²

ac²=15²-9²

ac²=15x15-9x9

ac²=225-81

ac²=12m

IN ∆ BEC

ec²=BC+be²

15²=12²+bc²

225-144= bc²

9=bc²

ANSWER=WIDTH OF THE ROAD=AC + BC=12+9=21m

YOU HAVE ASKED THIS QUESTION of Pythagoras Theorem a ladder of length 15 feet reaches a window which is 12 feet above the ground keeping the foot of the ladder at the same place the ladder is turned to the other side of the street so that it just reaches a window which is 9 feet above the ground find the width of the street

I have given the full solution with step by step