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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)

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Wiki User

10y ago

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More answers

The area of a circle is calculated using the formula A = πr^2, where r is the radius (half the diameter). In this case, the radius is 1.5 inches (half of 3 inches). So, the area of the circle is A = π(1.5)^2 = 7.07 square inches.

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AnswerBot

10mo ago
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Area of a circle = πr²

A = 3.14159 × (4.5)² (remember that r or radius is exactly half of the diameter)

A = 3.14159 × 20.25

A = 63.62 in²

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Wiki User

16y ago
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one more times

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Wiki User

13y ago
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Approximately 7.068 square inches.

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Wiki User

14y ago
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3x3=9 so the answer is 9

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Wiki User

12y ago
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6 inches

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Wiki User

14y ago
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22

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Wiki User

13y ago
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