Respuesta :

mumsy

Answer:

Step-by-step explanation:

you have a right triangle,

c^=a^+b^2

c=9 and a=4

9^2=4^2+x^2

81-16=x^2

65=x^2

x=[tex]\sqrt{65}[/tex]=8.06

so your gonna times 4 and 9 and then u get your answer