Question

a ladder 2.5m long rests on a vertical wall at a height 1.5m above the level ground. calculate the distance of the wall from the foot of the ladder

Answer 1

Ahh, thank you Pythagoras!

a^2 + b^2 = c^2

1.5^2 + b^2 = 2.5^2

2.25 + b^2 = 6.25

b^2 = 4

b = 2 m