Question

∆ABC ~∆DEF and AB:DE= 5:3 .Find DF,if AC= 12cm​

Answer 1

Answer:

$\frac{ab}{de} = \frac{5}{3} \\ \frac{ac(12cm)}{df} = \frac{5}{3} \\ df = \frac{12cm \times 3}{5} = 7.2cm$

where I mean Sun AC in packet 12 centimetre in paper you can mention it in shorten it I do it but you have to do a second step to mention the the value AC ok