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pi * r squared is the formula; so 3.14 * 2 * 2 = 12.56

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Q: What is area of 4 foot diameter circle?
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What is the area of a circle with a diameter of 4 inches?

The area of a circle with a diameter of 4 inches is: 12.57 square inches.


Area of circle with diameter?

Area of a circle = (1/4) x (pi) x (square of the diameter)


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The circumference of a 4 foot circle is: 12.57 feet(diameter x pi = circumference).


What is the area of a circle if the diameter is 4 cm in hectometers?

The area of a circle (in square hectometers) if the diameter is 4 cm is: 0.001257 hectometers2


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Its diameter is about 4 cm rounded


What is the circumference of a circle that is 4 ft?

A circle with a 4-foot diameter has a circumference of about 12.57 feet.


How many cubic yards in an 12 foot diameter circle with a 4 inch thickness?

How many cubic yards in an 12 foot diameter circle with a 4 inch thickness?


What is the circumference of a 4 foot circle?

The circumference of a 4 foot diameter circle may be obtained by multiplying the diameter by pi, which is 3.1416 4 X 3.1416 = 13 (rounded to the nearest whole number)


How do you express the area of a circle in terms of the diameter?

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What is the area of a 4 inch circle?

A 4-inch diameter circle has an area of 12.566 square inches.


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The area of a circle is A = pi times diameter² / 4. Given diameter d = 10 inches. Area A = 78.5398 inches².


4mm of a circle is what in area?

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