a. Let's denote the base of the triangle as 
 (which is given as 4 inches) and the height a 
. The formula for the area of a triangle is 
×
×
.
Given that the area 
 is no more than 10 square inches, we can write the inequality as:
×
×

Since the base 
 is given as 4 inches, the inequality becomes:
×
×

Simplifying:

b. Now we can solve for 
:

Divide both sides by 2:

So, the maximum height 
ℎ

h of the triangle is 5 inches.
c. Given the dimensions of the triangle, which are a base of 4 inches and a height of 5 inches, the maximum height of the triangle is 5 inches. This matches the result obtained from solving the inequality in part B.