Jawab:
Luas
perbandingan
Penjelasan dengan langkah-langkah:
AP : PD = 2 : 1
AP = 2x , PD = x --> AD = BC = 3x
AQ : QB = 1 : 3
AQ = y , QB = 3y --> AB = DC = 4y
DT : TC = 1 : 1 --> DT = 1/2 DC = 2y
.
Luas AQCTP = L. ABCD - L. CDP - L. QBC
Perbandingan Luas AQCTP dan Luas ABCD =
= [ L. ABCD - L. TDP - L. QBC ] / [ L. ABCD ]
= [ (AB. BC) - 1/2. PD. DT - 1/2 QB. BC) / (AB. BC)
= [ (4y. 3x) -1/2 (x )(2y) - 1/2 (3y)(3x) ] / (4y . 3x)
= [ 12 xy - xy - 9/2 xy) / (12 (xy)
= [ 12 - 1 - 9/2) / (12)
= [ 24 - 2 - 9 ) / (24)
= 13/24
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Jawab:
Luas
perbandingan
Penjelasan dengan langkah-langkah:
AP : PD = 2 : 1
AP = 2x , PD = x --> AD = BC = 3x
AQ : QB = 1 : 3
AQ = y , QB = 3y --> AB = DC = 4y
DT : TC = 1 : 1 --> DT = 1/2 DC = 2y
.
Luas AQCTP = L. ABCD - L. CDP - L. QBC
.
Perbandingan Luas AQCTP dan Luas ABCD =
= [ L. ABCD - L. TDP - L. QBC ] / [ L. ABCD ]
= [ (AB. BC) - 1/2. PD. DT - 1/2 QB. BC) / (AB. BC)
= [ (4y. 3x) -1/2 (x )(2y) - 1/2 (3y)(3x) ] / (4y . 3x)
= [ 12 xy - xy - 9/2 xy) / (12 (xy)
= [ 12 - 1 - 9/2) / (12)
= [ 24 - 2 - 9 ) / (24)
= 13/24