Respuesta :

Answer:

D. 9.7 in.

Step-by-step explanation:

the picture in the attached figure

we know that

area of the triangle is equal to

in this problem

A=47 in²

b=x

h=x

so

therefore

the answer is

x=9.7 in

Ver imagen lalamcg115
Ver imagen lalamcg115
Ver imagen lalamcg115