GUATEMALA CITY - Torrential rains brought by the first tropical storm of the 2010 season pounded Central America and southern Mexico, triggering deadly landslides. The death toll stood at 15 Sunday but authorities said the number could rise.
Archimedes proved the formula for the area of a circle (A = Ï r 2, where r is the radius of the circle) and showed that the value of Ï lay between 3 + 1/7 (approximately 3.1429) and 3 + 10/71 (approximately 3.1408).
Best Answer: the 'radius' of a circle is the distance from the center to the outside of the circle. anything that is in the direction from the center of the circle outward toward the circle is 'radial'. if you tie a rock to the end of a string and twirl it above yor head, the string is oriented radially. the 'tangent' of a circle is the line drawn at a 90 degree angle to the radius at any point on the circle.