Ladder 8 m long is leaning against the wall. Its foot is 1 m away from the wall. In which height ladder touches the wall?

Result

d =  7.9 m

#### Solution:

$x=8 \ \text{m} \ \\ y=1 \ \text{m} \ \\ d=\sqrt{ x^{ 2 }-y^{ 2 } }=\sqrt{ 8^{ 2 }-1^{ 2 } } \doteq 3 \ \sqrt{ 7 } \doteq 7.9373 \doteq 7.9 \ \text{m}$ Our examples were largely sent or created by pupils and students themselves. Therefore, we would be pleased if you could send us any errors you found, spelling mistakes, or rephasing the example. Thank you!

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