Question

If an 8-foot ladder is placed 3 feet from the wall, what is the approximate height it will reach on the wall? 7 feet 5 feet 11 feet

Answer 1

7 feet is the answer

Answer 2

The figure forms a right angled triangle, with hypotenuse = 8, distance from the wall = 3, let the height be x.

x² + 3² = 8²

x² + 9 = 64

x² = 64 -9

x² = 55

x = √55

x ≈ 7.42 feet.

So it is ≈ 7 feet.