Question

let triangle ABC &DEF are similar triangles and their area be respectively 64 cm^2 & 121cm^2 .If EF=15.4cm then BC is equal to

Answer 1

Hey Mate....!!!
Here's the answer....

We have,

A(Tri.ABC) / A(tri.DEF) = BC^2 / EF^2
= 64 / 121 = BC^2 / EF^2
= 64 / 121. = BC^2 / (15.4)^2
= BC / 15.4 = 8 / 11
= BC = 8 / 11 × 15.4


Hence,
________ BC = 11.2 ________


______Use attachment for diagram____


Hope it helps...!!!!