Question

∆ ABC, P, Q and R are the midpoints of AB, BC and CA respectively. AB = 12cm
BC = 16cm
CA = 20 cm Find the perimeter of trapezium PBCR

Answer 1

Answer:

ans) 40

Step-by-step explanation:

PR||BC , PR=1/2 BC (MID POINT THEOREM)

PR=1/2*16 =8 (BC = 16CM)

PR=8

PB=6CM (P is the mid point of AB)

RC=10CM (R is the mid point of AC)

now

=PR+RC+CB+BP

=8+10+16+6

=40

THIS IS THE ANSWER

Answer 2

Answer:

Answer: 40 cm

Definition:

P,Q AND R ARE MIDPOINT

SO IF AB=12 => PB=6 AND IF AC=20 => RC=10

ALREADY BC=10

IN A TRAPEZIUM OPPOSITE SIDE i.e.,

PR||BC

THIS IMPLIES ∆APR~∆ABC AND SIDES ARE IN RATIO 1:2

SO BC=12 =>PR=8

PERIMETER OF TRAPEZIUM PBCR=

PB+BC+RC+PR

=6cm+16cm+10cm+8cm

=40cm

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