Question

1. which of the following referents is most appropriate to represent a cubic centimetre? a. head of a pin b. eraser on the end of a wood pencil c. sugar cube d. square piece of lego 9. give an example of where you might use a book as a referent.

Explanation:

1. A cubic - centimetre is a small unit of volume. The head of a pin is much smaller than 1 cubic centimetre. An eraser on the end of a wood pencil is usually larger than 1 cubic centimetre. A sugar cube has a volume close to 1 cubic centimetre as its side - length is around 1 cm (since \(V = s^3\) and for \(s = 1cm\), \(V=1cm^3\)). A square piece of Lego is usually larger than 1 cubic centimetre.
2. A book can be used as a referent for measuring the area of a tabletop. For example, you can estimate how many book - sized areas can fit on the tabletop to get an approximate area measurement.

Answer:

1. C. Sugar cube
2. To estimate the area of a tabletop.