the qualily and quantity, of energy we
put forth
diredly impad! the result
Do Intro
gative

Question

the qualily and quantity, of energy we
put forth
diredly impad! the result
Do Intro
gative

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Cora 1 month 2021-08-06T05:27:12+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-06T05:28:17+00:00

    Explanation:

    the qualily and quantity, of energy we

    put forth 2 intro getting greatly impaired the result it no more than

    0
    2021-08-06T05:28:33+00:00

    Answer:

    he is a good time to time constraints on a regular thing to do the work is licensed

    Explanation:

    The area of Δ ADC= 60 square cm.

    Explanation:

    Since we have given that

    BC=12

    BD=3

    DC=BC-BD=12-3=9

    So, BD:DC=3:9=1:3

    So, we can let

    BD=x and DC=3x

    Now,

    \frac{\Delta ABD}{\Delta ADC}=\frac{\frac{1}{2}\times x\times h}{\frac{1}{2}\times 3x\times h}=\frac{1}{3}

    ΔADC

    ΔABD

    =

    2

    1

    ×3x×h

    2

    1

    ×x×h

    =

    3

    1

    So,

    \begin{gathered}3ABD=ADC\\\end{gathered}

    3ABD=ADC

    Now,

    \begin{gathered}\Delta ABD+\Delta ADC=\Delta ABC\\\\\frac{\Delta ADC}{3}+\Delta ADC=\Delta ABC\\\\\frac{4\Delta ADC}{3}=80\\\\\Delta ADC=60\text{ square cm}\end{gathered}

    ΔABD+ΔADC=ΔABC

    3

    ΔADC

    +ΔADC=ΔABC

    3

    4ΔADC

    =80

    ΔADC=60 square cm

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