Since ABC and DEF are similar
(BC/EF)= 8/11
BC=8/11 X EF
BC= 8/11 X 15.4
BC= 11.2
Im 12th now so mujhe ache se theorem yaad nhi hai but there is a theorem which states that when two triangles are similar, the square of the ratio of their corresponding side is equal to ratio of their area.
Read the book once, maths is the most beautiful subject in this world :)
Written on Sept. 10, 2018, 8:33 p.m.