Suppose you learn that people find faces that are symmetrical are more attractive than non-symmetrical faces. This is because a face that is very uneven (non-symmetrical) might indicate an underlying sickness that might make the individual unable to produce a healthy offspring. This observation and explanation is most like:

Here is your answer:                                                                                                                                                                                                                                                   formula for volume: base*width*height=                                                                                                 5*2*10=100                                                                                   your answer is 100cm.

Answer empty nest syndrome;