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Using 3.14 as Pi the area of circle is: 200.96

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Area of circle: pi*8 squared = 201.062 square cm rounded to three decimal places

Q: What is the area of a circle if the diameter is 16cm?

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64 pi sqcm

16cm

256 pi cm2

The diameter is twice the radius and so 2 times 16 = 32cm

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

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64 pi sqcm

16cm

The diameter of a circle is the length of a straight line from a point on the edge of the circle passing through the center of the circle and onto a point on the opposite edge of the circle. The radius of a circle is the length of a straight line from the center of a circle to a point on the edge of the edge of the circle. So the radius of a circle is half its diameter, in this case 8cm.

A = pi x 8(sup)2 cm(sup)2; C = pi x 16 cm

256 pi cm2

pi*d =22*16/7 =50.2857 cm

64 pi ie just over 201 sq cm

The diameter is twice the radius and so 2 times 16 = 32cm

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

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