If diameter is 38, then the radius is half of that or 19 inches..
Now the area is Pix192
area = pi*radius2Remember, to half the diameter to get the radius.Get the area of the outside circle, and the area of the inside circle, then take the inside area from the outside.I think it would be more helpful to you not to give you the answer. Work it out from this. If you are wondering what pi is, it is 3.14159
The diameter of a circle with an area of 37.68 is 6.92
The area of a circle with the diameter of 3m is 7.069 m2
The area of a circle with diameter of 4.9 is 75.43 units2
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
The area of a circle with a diameter of 9.4 m is: 69.4 m2
It is its square area which is found by pi*radius squared
A circle with a diameter has an area of 50.265486543928724876568901 sq. ft.
The diameter of a circle whose area is 200.96 is: 16
If the area of a circle is 8pi, its diameter is: 5.657 units.
The area of a circle with a diameter of two cm is about 3.1416 cm.
Assuming a diameter of 5 inches.The area of this circle is: 19.63