Or you can key it all into the calculator at the same time. To find the perimeter of a rectangle add the lengths of the rectangles four sides. A L W where A is the area L is the length W is the width and means multiply.
Acute less than 90 degrees obtuse more than 90 degrees and right 90 degrees.
Development length is the length of steel bars that should be embedded into the concrete of other members to make the strong bond between members like column beam slab etc. Also this ds notation will be a nice notation for the next section as well. The three sides of a right triangle are called the opposite adjacent and hypotenuse the longest side and are. Acute less than 90 degrees obtuse more than 90 degrees and right 90 degrees.