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Area of the circle: pi*20*20 = 400*pi square cm
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What is the circumference of a circle if the diameter is 40 inches?
The circumference of a circle, if the diameter is 40 inches, is about 125.7 inches. (C = d x Pi).
What is the circumference of a circle circumscribed about a square with a perimeter of 40?
Assuming you mean that the circle is touching all 4 corners of the square: If the perimeter of the square is 40, then each side of the square is 10 (40/4=10). You could find the diameter of the circle by breaking the square up into 2 triangles, drawing a diagonal line through the square. Using pythagorean's theory (a^2+b^2=c^2), we know legs 2 and b (they are each one side of the square, so: (10^2+10^2=c^2). 10^2 is 100, therefore it is (100+100=c^2). (200=c^2) (√200=c) and the √ of 200 is about 14.142, meaning that the diameter of the circle is √200, which is the same as 10√2, (or approximately 14.142). You multiply the diameter of a circle by pi to get the circumference of a circle. Therefore, the exact answer is (10√2)(π), which would be approximated at 44.42882938158366247015880990 units, where π is pi.
How many square miles in a 40 mile radius?
The formula for the area of a circle is: 3.14 (pi) times the radius squared. A circle with a 40 mile radius would have an area of 3.14 x 40 x 40 = 5024 square miles.
What is the circumference of a circle with a diameter 40 FEET?
Circumference= PI x Diameter = 3.14 x 40 feet = 125.6 feet
How do you find the diamter of a circle if you know the area?
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.
How many square feet are in a 40 foot diameter circle?
2512
How many square feet are in a circle 40 feet in diameter?
1256.64 square feet
How many square feet in a 40' diameter circle?
Area of circle: pi times radius squared
How many square inches in a 40 diameter circle?
400 x pi squinches
What is the area of the circle if the diameter is 40 inches inches?
The area of the circle is 1,256.6 square inches.
If a circle has the diameter of 40 in what is the area?
Area of circle: pi*20^2 = 400*pi square units
What is diameter of circle with area 40 square inches?
Area of circle =(11/14) * d *d d denotes diameter. For your case answer is 7.1365 inches
What is the diameter of 1000 sq ft circle?
The diameter is twice the square root of (1000/pi) feet.
How many square inches in a 40 inch diameter circle?
Area of a circle = πr² (remember that r or radius is exactly half of the diameter) Radius therefore = 40/2 = 20 inches Thus the Area = 3.14159 × 20 squared = 1256.636 square inches
How square feet in a 40 inch diameter circle?
Area of circle: pi*(20/12)^2 = 8.727 square feet rounded to 3 decimal places
What is the area of a circle with a diameter of 40 ft?
Area = pi*202 = 1256.637 square feet to 3 d.p.
What is the diameter of a 40 centimeter circle?
40 centimeters. The size of a circle is typically stated by giving its diameter. The circumference of a 40 cm circle (distance around the outside) is 40 x pi or about 125.66 cm.
