The area of the circle is 1,256.6 square inches.
Area of circle: pi times radius squared
Area = pi*202 = 1256.637 square feet to 3 d.p.
Area = pi * r2r = d/2 = 40/2 = 20Area = 400*pi= 1,256.636 approximate
In order to even discuss this question, we must assume that the unit of the '40' is the square of the unit of the '4'. -- The radius, diameter, and circumference of the circle with an area of 40 are each 10.794% shorter than the corresponding measurement in the circle with radius = 4 . -- Its area (40) is 20.423% less than the area of the circle with the radius of 4 .
If the diameter of a circle is 40 m then the area (in terms of Pi) is: about 400pi m2
A ≈ 1,256.64
Using 3.14 as Pi the area of circle is: 1256.0
The area of the circle is 1,256.6 square inches.
In order to find the diameter of a circle if you have the area is to rearrange the formula for the area of a circle to put diameter as the unknown, like so: PIE*d = Area of a Circle d = (Area of a Circle) / PIE Therefore if the area of your circle is 40cm, 40/PIE = 12.73cm and that's the diameter.
Area of circle =(11/14) * d *d d denotes diameter. For your case answer is 7.1365 inches
Area of circle: pi times radius squared
The diameter of a circle with an area of 37.68 is 6.92
Area = pi*202 = 1256.637 square feet to 3 d.p.
Area = pi * r2r = d/2 = 40/2 = 20Area = 400*pi= 1,256.636 approximate
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