Question

∆ ABC ~ ∆ DEF. BC = 4.8 cm, EF = 7.2 cm. Find A (∆ ABC ) : A (∆ DEF )​

Answer 1

Answer:

Given △ABC∼△DEF

In two similar triangles, the ratio of their areas is the square of the ratio of their sides

⇒

ar(DEF)

ar(ABC)

=(

EF

BC

)

2

⇒

ar(DEF)

80

=(

5

4

)

2

⇒

ar(DEF)

80

=

25

16

⇒ar(DEF)=125cm

2

Answer 2

Answer:

9.4

Step-by-step explanation: