which of the following is the most appropriate unit to use for expressing the volume of a classroom?

Question

which of the following is the most appropriate unit to use for expressing the volume of a classroom?

A) Cubic centimeters

B) Cubic meters

C) Square inches

D) Square feet

Answer 1

Volume is measured by multiplying a length, width, and height together. These measures should all be the same, meaning your amount should be "some unit" cubed. So that rules out C and D, since those both measure area.

As for the magnitude of unit... It depends on how big the thing we're measure is! As americans, we typically measure the area of a room in square feet. If we were to measure it's volume, we would probably multiply the area of a the room in square feet by its height in feet. We would be pretty unlikely to convert this to inches! Now, if we note that a centimeter is smaller than an inch (and an inch is defined to be exactly 2.54 centimeters), we would realize that we would be likely to measure the room in cubic meters.

So after all of that blah blah blah, the answer is B, cubic meters.