11-12 Significant Figures in Geometry Use geometric formula on the inside front cover of the book to solve these problems.
12 Find the volume of a cone whose height is and whose radius is .
The volume of the cone.
The height of the cone is .
The radius of the cone is .
The formula for volume of the cone is,
Here, is the volume, is the radius of the cone and is the height of the cone.
The significant figures in a number are one from first nonzero digit to the last nonzero digit when reading from left to right.
When multiplying or dividing, round off the final result so that it has as many as significant digits as in the given values with the fewest number of significant digits.
Substitute for and