Answer: D. x= 24 in
Step-by-step explanation:
Given:The area of the triangle = [tex]84\ in^2[/tex]
In the given picture, it can be seen that the height of the triangle = 7 inches
Also, the base of the triangle = x
We know that the area of the triangle is given by :-
[tex]\text{Area}=\frac{1}{2}*base*height\\\\\Rightarrow\ 84=\frac{1}{2}*x*7\\\\\Rightarrow\ x=\frac{84\times2}{7}\\\\\Rightarrow\ x=24[/tex]
Hence, the value of x=24 in.
