Question

plz find for me... it's base on lesson similarity of 10th class state bord

Answer 1

Hey there !!

Given that, DE || AB

By Basic Proportionality Theorem

CD / AD = CE / BE
3 / 5 = ( 6.4–x ) / x
3x = 5 ( 6.4–x )
3x = 32 – 5x
5x + 3x = 32
8x = 32
x = 32 / 8
x = 4

Thus, BE = 4