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Area of a circle = πr² (remember that r or radius is exactly half of the diameter)
Radius therefore = 40/2 = 20 inches
Thus the Area = 3.14159 × 20 squared = 1256.636 square inches
Wiki User
∙ 7y ago
Wiki User
∙ 6y agoArea of circle: pi*(20/12)^2 = 8.727 square feet rounded to 3 decimal places
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The area of a circle with an 8 inch diameter is approximately 50.27 square inches.
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The area of a circle with an 8 inch diameter is approximately 50.27 square inches.
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The area of a 3-inch diameter circle is about 7.068 square inches.
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