Answer: d. 8 inches
Step-by-step explanation:
Given: The area of triangle = 40 sq. inches
The base of the triangle = 10 inches
Let h be the height of the triangle.
The area of a triangle is given by :-
\(\text{Area}=\frac{1}{2}\times base\times height\\\\\Rightarrow\ 40=\frac{1}{2}\times10\times h\\\\\Rightzarrow\ h=\frac{40}{5}=8\\\\\Rightarrow\ h=8\ inches\)
Hence, the height of the triangle = 8 inches
