sat suite question viewer
To study the moisture content in a group of trees, samples from the trunk of each tree were taken from trees and cut in the shape of a cube. The length of the edge of one of these cubes is centimeters. If this cube has a mass of grams, what is the density of this cube, in grams per cubic centimeter?
Explanation
The correct answer is . The volume of a cube is given by the formula , where is the length of an edge of the cube. It’s given that each edge of the cube has a length of centimeters. Substituting centimeters for in the formula yields , or cubic centimeters. It’s given that the cube has a mass of grams. Dividing the mass, in grams, of the cube by the volume, in cubic centimeters, of the cube gives its density, in grams per cubic centimeters. Therefore, the density of the cube is , or grams per cubic centimeter. Note that .32 and 8/25 are examples of ways to enter a correct answer.