Question

Find the length of the following sides: DF AB EF

Answer 1

Answer:

DF) = 10

AB) = 5

EF) = 12.5

Step-by-step explanation:

For length AB

$3^{2} +4^{2} = AB^{2}$   -> 9+16=$\sqrt{25}$ -> 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:

$DE^{2} +DF^{2} =EF^{2}$

$7.5^{2}+ 10^{2} =12.5$