Arc Length Formula in Integral Form. A rectangular bedroom with one wall being 15 feet long and the other being 12 feet long is simply 12 x 15 180 square feet. Tan 36o 5-25.
The formula for area A A of a circle with radius r and arc length L L is.
P is of course the famous mathematical constant equal to about 314159 which was originally defined as the ratio of a circles circumference to its diameter. Lets discuss how to find length or breadth when area of a rectangle is given. The formula for the area of a circle is p x radius2 but the diameter of the circle is d 2 x r 2 so another way to write it is p x diameter 22. The grid above contains unit squares that have an area of 1 cm 2 each.