Respuesta :

2816516

Answer:

D

Step-by-step explanation: if you see the weight times length and calulated it you'll get 64 or 84

Answer:

Option B.[tex]5\sqrt{21}[/tex]

Step-by-step explanation:

(x)^2=(CD)(CA)

=(21)(21+4)

=21 × 25

x=√21×25

x=5√21

hope it helps :)