Jawabanmu

Jawaban paling cerdas!
2014-08-24T11:07:52+07:00
Maaf, gk urut, 

1.BD = ... ?
 AD^2 = BD X CD
12^2 = BD X 9
144 = BD X 9
 \frac{144}{9} = BD
BD = 16 Cm

2.AC = ... ? 
AC^2 = DCXBC
AC^2 = 9X25
AC^2 = 225
AC = 15 Cm

3. AB = ... ? 
AB^2 = BC^2 - AC^2
AB^2 = 25^2 - 15^2
AB^2 = 625 - 225
AB^2 = 400
AB = 20 Cm

4. BC = ... ? 
BC = BD + DC
BC = 16 +  9 
BC = 25 Cm

5. Luas ΔABC = ... ? 
ΔABC =  \frac{1}{2} X a X t
ΔABC  = \frac{1}{2} X 15 X 20
ΔABC  = 15 x 10
ΔABC = 150 Cm^2

Semoga Bermanfaat....
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