Neither is it-diflricult to find the area of a circle mechanically. For the area of a circle being found by multiplying the circumference by the length of the radius, and dividing the product by 2 (page 165, 3dly), we need only pass a string around theanbsp;...
|Title||:||First lessons in Plane Geometry. Together with an application of them to the solution of problems, etc|
|Author||:||Francis Joseph GRUND|