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
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
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