A table tennis ball just fits inside a plastic cube with edges 40mm in length. Determine how much space in the cube is not taken up by the ball. (empty space) please explain step by step

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label