Ten squared is 100 and 100 times p is 31416. The diameter is 04m so the Area is. Now to find.
Area quarter circle 14 pi r².
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. Using the formula and plugging in 3 for r you get A pi 32 9 pi 2826 inches squared. J o ½ pr 2 R 2. So the area of a semicircle is 12pr 2 where r is the radius.