Question

If area of similar triangles A ABC and A DEF be 64 sq cm and 121 sq cm and EF =
15.4 cm then BC equals​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

11.2cm

Step-by-step explanation:

Area of similar triangle= If two triangles are similar, then the ratio of the area of both triangles is proportional to the square of the ratio of their corresponding sides.

∆DEF/∆ABC=EF^2/BC^2,

121/64=15.4^2/BC^2

BC=11.2cm