Image caption, Using π = 3۰142, find the circumference a circle with a radius of 3۰25 cm. Give the answer to 3 significant figures. 2 × 3۰142 × 3۰25 = 20۰423. This is rounded to 3 ...

If you wanted to calculate the circumference of a circle with this distance as the radius, the difference between using the first 16 digits of pi compared with hundreds of digits would be less ...

The circumference of a circle is, in turn, equal to 2πr, where r is the circle's radius. No matter how big ... Archimedes used a 96-sided polygon to calculate his most precise value of pi.