<u>Answer:</u>
<u>For a:</u> The volume of the box is 217.5 mL
<u>For b:</u> The volume of the box is 0.2175 L
<u>Explanation:</u>
The box is a type of cuboid.
To calculate the volume of cuboid, we use the equation:

where,
V = volume of cuboid
l = length of cuboid = 10.00 cm
b = breadth of cuboid = 7.25 cm
h = height of cuboid = 3.00 cm
Putting values in above equation, we get:

To convert the volume of cuboid into milliliters, we use the conversion factor:

So,

Hence, the volume of the box is 217.5 mL
To convert the volume of cuboid into liters, we use the conversion factor:

So,

Hence, the volume of the box is 0.2175 L