Jumat, 03 Juni 2011
di
01.06
|
<img class='absimg' src='http://html.scribd.com/hy215q18h8rf5s/images/1-35da38e4ad/000.jpg' onMouseDown='return false' style='left: 15.63em; clip: rect(7.00em 17.63em 13.75em 0.07em); height: 19.82em; top: 6.19em; width: 17.69em;'/><img class='absimg' src='http://html.scribd.com/hy215q18h8rf5s/images/1-35da38e4ad/000.jpg' onMouseDown='return false' style='left: 12.32em; clip: rect(13.88em 9.75em 16.82em 0.07em); height: 19.82em; top: 13.25em; width: 17.69em;'/><img class='absimg' src='http://html.scribd.com/hy215q18h8rf5s/images/1-35da38e4ad/000.jpg' onMouseDown='return false' style='left: 2.50em; clip: rect(16.88em 14.19em 19.75em 9.88em); height: 19.82em; top: 16.00em; width: 17.69em;'/><img class='absimg' src='http://html.scribd.com/hy215q18h8rf5s/images/1-35da38e4ad/000.jpg' onMouseDown='return false' style='left: 12.32em; clip: rect(0.07em 17.63em 6.88em 0.07em); height: 19.82em; top: 44.57em; width: 17.69em;'/><img class='absimg' src='http://html.scribd.com/hy215q18h8rf5s/images/1-35da38e4ad/000.jpg' onMouseDown='return false' style='left: -1.44em; clip: rect(13.88em 14.88em 16.75em 9.88em); height: 19.82em; top: 46.32em; width: 17.69em;'/> Rumus praktis matematika kelas IX ( 3 SMP)
Dari gambar berikut ini, PQ // AB. Panjang PQ adalah …
Penyelesaian cara biasa
PQ
=
AD
DPxAB
APxDC
)
(
)
(
+
=
13
)
28
4
(
)
15
9
(
x
x
+
=
13112
135+
=13
247
= 19 cm
Penyelesaian cara cepat
Perhatikan bangun datar yang baru !
PQ = PT + 15
AM
PT
AD
DP=13
13
4
PT
=
PT = 4 cm
Diposting oleh
my blog
Label:
matematika x
0 komentar:
Posting Komentar