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

2 thoughts on “the qualily and quantity, of energy we<br />put forth<br />diredly impad! the result<br />Do Intro<br />gative<br />​”

1. Explanation:

   the qualily and quantity, of energy we

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

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2. 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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