Given:
Base of the triangle = 3 ft
Height = 4 ft
Let's find the longest side of the triangle.
Since the radius of the circle is 1.25, the diameter(the dotted lines) is:
d = 1.25 x 2 = 2.5 ft
Thus, the length is:
1.25 + 2.5 + 1.25 = 5 ft
To find the volume of right solid, apply the formula:
Thus, we have: