Question

ABC ~ DEF and their areas be, respectively, 64 cm2

and 121 cm2
.

If EF = 15.4cm, then length of BC is
(a) 11.2cm (b) 25.2cm (c) 13.6cm (d) 22.5cm (e) none of these

Answer 1

Answer:

ans (a) 11.2

Step-by-step explanation:

If triangles are similar then

the ratio of areas is equal to the square of their corresponding sides.

arABC/arDEF = $\frac{(BC)^{2} }{(EF)^{2} }$