Find the length of the following sides:
DF
AB
EF

DF) = 10

AB) = 5

EF) = 12.5

Step-by-step explanation:

For length AB

  -> 9+16= -> 5

For length DF

We know that AD is 2.5 times smaller than DE (7.5 / 3)

Now we can use that to determine length DF

BD = 4, DF = 4*2.5 = 10

using the Pythagorean theorem, you can find EF:

6 meters

step-by-step explanation: