Question

Find the unknown length x in the following figures:​

Answer 1

Step-by-step explanation:

By using phythagorean theoreom:

DF^2 = DE^2 + EF^2

=>13 ^2 = 5^2 + EF^2

=> 169 = 25 + EF ^2

=> 169 -25 = EF ^2

=>144 = EF^2

therefore ,

EF = 12

Answer 2

Answer:

$\:$

By applying pythagoras theorem

i) x = 9 + 16

= 25

= 5

ii) x = 64 + 36

= 100

= 10

iii) x = 225 + 64

= 289

= 17