If triangles ABC and DEF are similar and AB=4cm, DE=6cm, EF=9cm and FD=12cm, the perimeter of triangle is:

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If triangles ABC and DEF are similar and AB=4cm, DE=6cm, EF=9cm and FD=12cm, the perimeter of triangle is:

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(a)22cm
(b)20cm
(c)21cm
(d)18cm

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Class 10 Maths Rohit QNA 3 years 2021-12-29T13:20:45+00:00 2021-12-29T13:20:45+00:00 1 Answer 6 views Enlightened 0

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Rohit QNA Enlightened · Answer 1 · 2021-12-29T13:21:03+00:00

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2021-12-29T13:21:03+00:00 December 29, 2021 at 1:21 pm

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Answer: d
Explanation: ABC ~ DEF
AB=4cm, DE=6cm, EF=9cm and
FD=12cm
AB/DE = BC/EF = AC/DF
4/6 = BC/9 = AC/12
BC = (4.9)/6 = 6cm
AC = (12.4)/6 = 8cm
Perimeter = AB+BC+AC
= 4+6+8
=18cm

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If triangles ABC and DEF are similar and AB=4cm, DE=6cm, EF=9cm and FD=12cm, the perimeter of triangle is:

If triangles ABC and DEF are similar and AB=4cm, DE=6cm, EF=9cm and FD=12cm, the perimeter of triangle is:

About Rohit QNAEnlightened

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