The base of a solid oblique pyramid is an equilateral triangle with a base edge length of 18 inches What is the height of the triangular base of the pyramid

The answer is 9 sq root of 3

The height of the triangular base of the pyramid is calculated through the equation,

h = (cos x) (18 in)

where h is height and x is half of the angle of the triangle. Since the triangle is equilateral, the value of x is 30°. Substituting,

h = (cos 30°) (18 in)

h = 15.59 in

Thus, the height of the base is approximately 15.59 inches.