When you say "a 20 inch circle", I'm going to assume you mean the distance
all the way across it, through the center ... that is, the circle's "diameter".
The area of a circle is (pi) x (Radius)2 = (pi) x (100) = 314.159 square inches (rounded)
Area of a circle = πr²
A = 3.14159 × (4.5)² (remember that r or radius is exactly half of the diameter)
A = 3.14159 × 20.25
A = 63.62 in²
one more times
Approximately 7.068 square inches.
3x3=9 so the answer is 9
6 inches
22
A 56-inch diameter circle has an area of about 17.06 square feet.
Area of the square = 10x10=100 in^2 Area of Circle=pi/4*10^2 ~=78.539817 in^2 Area between them is the area of the square minus the area of the circle: 100-78.539817 ~=21.46 in^2
If 36 inches is the diameter the answer is: 7,068 square feet.
No square inch can fit into an inch. an inch is a length but a square inch is a square and each side is 1 inch.
Well first remember that volume is area times height. So first think about what the area of a cross-section of a pipe would be. The cross section would be a circle, and we know the circle is 3 inches in diameter. So use the formula for area of a circle (pi times the radius squared) and multiply that by the length of the pipe. Remember that the radius is half the diameter. Still need help?
A 4.75-inch diameter circle contains 17.72 square inches.
The area of a circle with an 8 inch diameter is approximately 50.27 square inches.
19.63 square inches are in the area of a 5-inch diameter circle.
The area of a 3-inch diameter circle is about 7.068 square inches.
There are 100*pi square inches in a 20 inch diameter circle
A 1.25-inch diameter circle contains 1.227 square inches.
A 20-inch diameter circle contains: 314.16 square inches.
The area of 3.5-inch diameter circle is: 9.621 square inches.
The area of a 18-inch diameter circle is: 254.5 square inches.
The area of a circle that has an 8.5 inch diameter is: 56.75 square inches.
The area of a circle that has a 12-inch diameter is: 113.1 square inches.
The area of a circle with a 5-inch diameter is: 19.63 square inches.