Question

full address 25 metre long which is placed against wall reaching the top of the building the distance between the foot of a ladder and Earth and the building is 15 M find the height of the building

Answer 1

Error :- A ladder instead of *full address*



So the question says :-
A ladder is 25 m long and is placed against a wall reaching at the top. The distance between foot of wall and ladder is 15m, we have to find the height of the building.

(Refer the attachment for figure)

Since, a wall is perpendicular to ground, we will apply Pythagoras Theorem.

The ladder will act as hypotenuse, hence

height² + base² = hypotenuse²

=> h² + 15² = 25²

=> h² = 25² - 15²

=> h² = 625 - 225

=> h² = 400

=> h = √400

=> h = 20m

Hence, the height of the building is 20 m

Answer 2

$\bf\huge\boxed{\boxed{\bf\:Attached\:pic\:is\:created\:by\:me}}}$

H² + B² = Hypotenuse²

H² + (15)² = (25)²

H² = (25)² - (15)²

H² = 625 - 225

H² = 400

$\bf\huge H=\sqrt{400}$

H = 20m

$\bf\huge\boxed{\boxed{\bf\:Height\:of\:Building=\:20m}}}$

$\bf\huge\boxed{\boxed{\bf\:Thanks}}}$