Online Calculators > Math Calculators > Area of 4 Inch Circle

Area of 4 Inch Circle

Area of 4 inch circle calculator is used to calculate the area of a circle with diamater of 4 inches. To calculate what is the area of a 4 inch diameter circle, use the formla of A = πr2, where r is the radius. We can also use the A = 1/4πd2 formula where d is the diameter.

Diameter

Inches
Calculate area of 4 inch circle
Square Inches: 12.566370614359172
Square Feet: 0.08727
Square Meter: 0.00811
Square Yards: 0.0097
Square Kilometers: 0
Square Miles: 0
Acre: 0

What is the area of a 4 inch diameter circle?

The area of a 4 inch circle is 12.57 square inches.

Using the formula A = 1/4πd2 where d is the diameter, we have
Area = 1/4πd2 = 1/4 x 3.14 x 42 = 12.57

What is the radius of a circle with a 4 inch diameter?

The radius of a 4 inch circle is 2 inches, because radius is half of a diameter in a circle.

Diameter Area
4 12.57
4.01 12.63
4.02 12.69
4.03 12.76
4.04 12.82
4.05 12.88
4.06 12.95
4.07 13.01
4.08 13.07
4.09 13.14
4.1 13.20
4.11 13.27
4.12 13.33
4.13 13.40
4.14 13.46
4.15 13.53
4.16 13.59
4.17 13.66
4.18 13.72
4.19 13.79
4.2 13.85
4.21 13.92
4.22 13.99
4.23 14.05
4.24 14.12
4.25 14.19
4.26 14.25
4.27 14.32
4.28 14.39
4.29 14.45
4.3 14.52
4.31 14.59
4.32 14.66
4.33 14.73
4.34 14.79
4.35 14.86
4.36 14.93
4.37 15.00
4.38 15.07
4.39 15.14
4.4 15.21
4.41 15.27
4.42 15.34
4.43 15.41
4.44 15.48
4.45 15.55
4.46 15.62
4.47 15.69
4.48 15.76
4.49 15.83
4.5 15.90
4.51 15.98
4.52 16.05
4.53 16.12
4.54 16.19
4.55 16.26
4.56 16.33
4.57 16.40
4.58 16.47
4.59 16.55
4.6 16.62
4.61 16.69
4.62 16.76
4.63 16.84
4.64 16.91
4.65 16.98
4.66 17.06
4.67 17.13
4.68 17.20
4.69 17.28
4.7 17.35
4.71 17.42
4.72 17.50
4.73 17.57
4.74 17.65
4.75 17.72
4.76 17.80
4.77 17.87
4.78 17.95
4.79 18.02
4.8 18.10
4.81 18.17
4.82 18.25
4.83 18.32
4.84 18.40
4.85 18.47
4.86 18.55
4.87 18.63
4.88 18.70
4.89 18.78
4.9 18.86
4.91 18.93
4.92 19.01
4.93 19.09
4.94 19.17
4.95 19.24
4.96 19.32
4.97 19.40
4.98 19.48
4.99 19.56
area of 5 inch circle

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