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).
No. The federal registration symbol, the R in a circle (Â®), is for use only on trademarks registered with the USPTO, not for pending applications. The use the Â® to provide notice to others of your legal rights in a federally protected trademark once your mark is accepted for registration.