Answer:



Step-by-step explanation:
we know that
The sum of interior angles in a triangle must be equal to 180 degrees
so

solve for x





it would be 160 feet wide
The volume of a prism = area of the base * height
substitute:
640 = A * 8
base area=80 sq ft<span />
Answer:
an acute triangle
Explanation:
All of the angles are less than 90 degrees, which is an acute triangle.