To find the volume of the cone-shaped storage container in cm^3, we can use the formula for the volume of a cone:
V = (1/3) * pi * r^2 * h
where V is the volume, r is the radius, and h is the height.
Since the container is 60 cm wide, the radius is half of that, or 30 cm. And the height of the container is 20 cm. So we can substitute these values into the formula:
V = (1/3) * pi * (30 cm)^2 * (20 cm)
V = 18,849.56 cm^3
To convert cm^3 to liters, we divide by 1000:
V = 18,849.56 cm^3 / 1000 = 18.85 liters
Therefore, the container holds 18.85 liters of photographic chemical.