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Area of a circle = pi*radius2

Area = pi*10.52 = 346.3605901 square units

Q: What is the area of a circle with a diameter of 21?

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346.36 square units.

A circle with a radius of 21 yards has an area of 1,385.44 square yards.

The circumference of a circle that has a diameter of 21 is about 65.97

The area of a circle with a diameter of 9.4 m is: 69.4 m2

If the area of a circle is 8pi, its diameter is: 5.657 units.

Related questions

346.36 square units.

A circle with a radius of 21 yards has an area of 1,385.44 square yards.

Its just the area of a circle 21 inches or 21 centimeters? area of a circle is (pi)*r2 where pi = 3.1415.... and r = radius thus A = (3.1415)*(diameter/2)2 u can figure out the answer from that with a calculator

The circumference of a circle that has a diameter of 21 is about 65.97

The diameter of a circle with an area of 37.68 is 6.92

The area of a circle with the diameter of 3m is 7.069 m2

The area of a circle with diameter of 4.9 is 75.43 units2

If a circle has a diameter of 21 feet the circumference is: 65.97 feet (diameter x Pi = circumference).

To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)

The area of a circle with a diameter of 9.4 m is: 69.4 m2

The area of a circle with a diameter of two cm is about 3.1416 cm.

A circle with a diameter has an area of 50.265486543928724876568901 sq. ft.