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)
A 56-inch diameter circle has an area of about 17.06 square feet.
Approximately 33.1 inches. If you need it more precise: 33.104256125083159 inches.
The area of the circle is πr^2 = (π(10/2)^2) = 25π square inches. The area of the square is 10^2 = 100 square inches. The area of the region inside the square and outside the circle is 100 - 25π = 21.46 square inches.
If 36 inches is the diameter the answer is: 7,068 square feet.
The area of a plate (which we are assuming is in the shape of a circle) is A=(pi)(radius)^2 A diameter is (2) times the (radius). The area of the dinner plate is (3.14)(5.5)^2 = 94.99 The area of the salad plate is (3.14)(4)^2 = 50.24 Now, subtract the area of the smaller plate from the larger plate. Therefore, 94.99 - 50.24 = 44.75. Therefore, the dinner plate is approximately 44.74 in^2 more than the salad plate.
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 a circle that has an 8.5 inch diameter is: 56.75 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 a 12-inch diameter is: 113.1 square inches.
The area of a circle with a 5-inch diameter is: 19.63 square inches.