Area of circle: pi times 2 squared = 4*pi square inches
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Area of a circle = pi times radius squared
Area = pi * radius * radius radius = diameter / 2 radius = 16/2 = 8 Area = 64 * pi Area 201.062 inches2
1 inch
2 inch radius = 12 9/16" circumference & an area of 12.56637 sq. inches.
Radius is 3 times as large so area is 3*3 = 9 times as large.
Area of a circle = pi times radius squared
1/2 inch
The formula to calculate the area of a circle is A = πr^2, where A is the area and r is the radius. Given a radius of 4 inches, we can substitute r = 4 into the formula to find the area. Therefore, the area of a circle with a 4-inch radius is A = π(4)^2 = 16π square inches, or approximately 50.27 square inches.
In a circle, Area = pi times radius squared: A = (pi)(r^2) Since the diameter equals 2 inches, the radius is one inch: A = (pi)(1^2) A = pi = 3.14 inches squared
Area = pi * radius * radius radius = diameter / 2 radius = 16/2 = 8 Area = 64 * pi Area 201.062 inches2
1 inch
2 inch radius = 12 9/16" circumference & an area of 12.56637 sq. inches.
The area of a circle is calculated using the formula A = πr^2, where r is the radius of the circle. For a 12-inch circle, the radius is half of the diameter, so the radius is 6 inches. Therefore, the area of the 12-inch circle is A = π(6)^2 = 36π square inches. Similarly, for a 9-inch circle, the radius is 4.5 inches, so the area of the 9-inch circle is A = π(4.5)^2 = 20.25π square inches.
Radius is 3 times as large so area is 3*3 = 9 times as large.
If that's the radius, use the standard formula for the area of a circle. If it's the diameter, divide it by 2 first, to get the radius.
The diameter of a 28-square inch circle is: 5.971 inches.
2 inches. the radius is half of the diameter