Question

from the height of a wall if a ladder 10 metre long place along the wall and its foot is 2 metre away from the wall.​

Answer 1

height of the wall = 9.79 m

Explanation:

This form a right angled triangle.

Hypotenuse = length of the ladder = 10 m

Base = length from foot of ladder to wall.

Altitude = height of the wall

Pythagorean's theorem,

base² + altitude² = hypotenuse²

2² + altitude² = 10²

4 + altitude² = 100

altitude² = 100 - 4

altitude² = 96

altitude = √96 = 9.79 m