Question

∆ABC ~ ∆ DEF, ar ( ∆DEF ) = 100cm*cm and AB/DE=1/2​

Answer 1

Answer:

area of ∆ABC is equal to 25 cm sq.

Answer 2

Answer:

25 cm²

Step-by-step explanation:

Actually friend.. you have not completed the question. If they are asking for ar(ABC) then the solution is :

We know

ar(ABC) / ar(DEF) = (AB / DE)² = (BC / EF)² = (AC / DF)²

GIVEN

ar(DEF) = 100cm²,      AB / DE = 1/2

so,

ar(ABC) / ar(DEF) = (AB / DE)²

ar(ABC) / 100 = (1 / 2)²      

ar(ABC) / 100 = 1 / 4

ar(ABC) = ( 1 / 4) x100

ar(ABC) = 25cm² is your needed answer