Shale Gas Reporter. 13 new permits were issued in Ohio last month, and 81 permits were issued in Pennsylvania. 13 new horizontal drilling permits were issued for the Utica or Point Pleasant shale in Ohio last month, but no new permits were issued for Ohio's Marcellus shale.
The 3-4-5 Triangle. It is perhaps surprising that there are some right-angled triangles where all three sides are whole numbers called Pythagorean Triangles. The three whole number side-lengths are called a Pythagorean triple or triad. An example is a = 3, b = 4 and h = 5, called the 3-4-5 triangle. We can check it as follows: 3 2 +4 2 = 9 + 16 = 25 = 5 2 so a2 + b2 = h2. This triple was known to the Babylonians (who lived in the area of present-day Iraq and Iran) even as long as 5000 years ago! Perhaps they used it to make a right-angled triangle so they could make true right-angles when constructing buildings-we do not know for certain.
Examples of the Pythagorean Theorem. When you use the Pythagorean theorem, just remember that the hypotenuse is always 'C' in the formula above . Look at the following examples to see pictures of the formula.