Question

In triangle DEF, line PQ || side EF. DQ-1.8,
OP = 5.4, PE = 7.2 Find DE.​

Answer 1

Answer:

we know that,

DQ=1.8

OP=5.4

PE=7.2

According to theorem BPT,

DP/PE=DQ/QF

DP/7.2=1.8/5.4

DP5.4= 7.2×1.8

DP5.4=12.96

DP=2.4

DE=DP+PE

DE=2.4+7.2

DE=9.6

Answer 2

Step-by-step explanation:

In ∆ DEF,

PQ || Side EF.

: BY B. P. T. THEOREM,

DP/PE = DQ / QF.

DP / 7.2 = 1.8 / 5.4

DP × 5.4 = 7.2 × 1.8

DP = 12.96 /5.4

:DP= 2.4

DE = DP + PE .

DE = 2.4 + 7.2

:DE = 9.6

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