4. A5 m long ladder when set against the wall of a house reaches to a height of 4.8 m. How far is the foot of the ladder from the

Question

4. A5 m long ladder when set against the wall of a house reaches to a height of 4.8 m. How far is the foot
of the ladder from the wall?​

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Remi 1 month 2021-08-14T05:54:19+00:00 1 Answer 2 views 0

Answers ( )

    0
    2021-08-14T05:55:22+00:00

    Answer:

    \begin{gathered}{h}^{2} = {b}^{2} + {p}^{2} \\ {b}^{2} = {h}^{2} – {p}^{2} \\ = {5}^{2} – {4.8}^{2} \\ = 25 – 23.04 \\ = 1.96 \\ b = \sqrt{1.96} \\ = 1.4m\end{gathered}

    h

    2

    =b

    2

    +p

    2

    b

    2

    =h

    2

    −p

    2

    =5

    2

    −4.8

    2

    =25−23.04

    =1.96

    b=

    1.96

    =1.4m

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