In the figure alongside, AB//PR ,AP = 6CM ,PQ =15CM And QR =3CM , FIND the length of BR
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given:
AP=6cm PQ=15cm RQ=3cm
let BR be x
QR=QB+BR
3=QB+x
3-x=QB
PQ=QA+AP
15=QA+6
15-6=QA
9=QA
AB//PR
thus, QA/AP=QB/PE
9/6=3-x/x
9x=18-6x
15x=18
x=18/15
x =6/5
x=1.2
thus,BR=1.2cm
AP=6cm PQ=15cm RQ=3cm
let BR be x
QR=QB+BR
3=QB+x
3-x=QB
PQ=QA+AP
15=QA+6
15-6=QA
9=QA
AB//PR
thus, QA/AP=QB/PE
9/6=3-x/x
9x=18-6x
15x=18
x=18/15
x =6/5
x=1.2
thus,BR=1.2cm
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