Question

The perimeter of two similar triangles ABC
and PQR are respectively, 48 cm and
36 cm. If PQ = 12 cm, then find AB.
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Answer 1

Semiperimeter, S=18 cm

Let the side of the triangle be a,b,c such that

a=16 cm, b=14 cm

S=

2

a+b+c

=

2

16+14+c

18=

2

30+c

c=36−30=6 cm

Therefore, third side of triangle is 6

Answer 2

question is wrong send it again I have done but some doubt are there