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Area and circumference of a circle with diameter 4ft
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Area and circumference of a circle with diameter 4ft

User DuCorey
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Area of a circle is given by: A = pi * r^2 Circumference is given by : C = 2* pi * r where r is radius: r = d / 2 = 4 / 2 = 2 ft So then: A = pi * 2^2 = 12.56 ft^2 C = 2* pi * 2 = 12.56 ft
User Jordi Nebot
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