The diameter of the traffic cone= 0.4604
Explanation:
The volume of the cone= 150 cubic inches.
The height of the cone= 18 inches.
The volume of the cone= (1/3) x pi x R² x H
150 = (1/3) x (22/7) x R² x 18
R² = 3 x 7/ 22 x 18
R² = 0.0530
R = 0.2302
Diameter, D= R x 2
D= 0.2302 x 2
Diameter, D= 0.4604