The area of a 3 cm circle is: 7.069 square cm
The area of a circle, if the radius is 5 cm, is: 78.54 cm2
If 0.8cm is the radius (distance from the centre to the edge of the circle) of the circle, the area of the circle is 2.010619298 cm squared. If 0.8cm is the diameter (distance from one side of the circle to the other), the circle's area is 0.5026548246cm squared.
The area of the square is 98 square cm. Assuming the shaded area is the remainder of the circle, its area is 55.9 square cm (approx).
pie x 4.5 squared
Using 3.14 as Pi the area of circle is: 2461.76
Using 3.14 as Pi the area of circle is: 2461.76
A circle with a radius of 16 cm has an area of 804.25 square cm.
Using 3.14 as Pi the area of circle is: 0
Using 3.14 as Pi the area of circle is: 1519.76
Using 3.14 as Pi the area of circle is: 0
Using 3.14 as Pi the area of circle is: 94.985
Using 3.14 as Pi the area of circle is: 254.34
Using 3.14 as Pi the area of circle is: 32.153600000000004
Using 3.14 as Pi the area of circle is: 50.24
Using 3.14 as Pi the area of circle is: 28.259999999999998
Using 3.14 as Pi the area of circle is: 0