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Q: What is the area of a circle with a radius of 9 centimeters?

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You divide the area of the shaded region by the area of the full circle. For example, if the radius of the shaded region is 2 meters, the probability would be 4pi / 36pi, or 1/9. If the shaded region is a 'slice' of the circle, the chance is just the fraction of the circle which the 'slice' is.

18 pi or 56.5486678

I assume you mean a diameter of 3 feet. Divide the diameter by 2, to get the radius. Then use the standard equation for the area of a circle: area = π x radius^2 = π x (3 ft ÷ 2)^2 = 9/4 π sq ft ≈ 7.07 sq ft

Each side has surface area of 3X3 = 9 cm 6 sides X 9 cm/side = 54 cm

Since the circle is centered at the origin, the equation of the circle is x2 + y2 = r2. So we have: x2 + y2 = (3/2)2 x2 + y2 = 9/4

Related questions

A circle with a radius of 9 feet has an area of 254.47 square feet.

If you triple the radius of a circle, the area will increase by 9. Area is proportional to the square of the radius.

If radius of a circle is 9 centimeters the circumference would be: 56.55 cm (r x 2 x Pi = circumference).

circumference = 2*pi*9

The formula for a circle's area is pi*radius*radius.The diameter is equal to two times the radius.D = 2*radiusSo, the radius is 4.5 cmArea = pi*radius*radius = 3.14159 * 4.5cm * 4.5cm = 63.617 cm2

A cone with a radius of 6 centimeters and a slant height of 9 centimeters will have a total surface area of approximately 282.74cm2

Area of a circle of radius r = Ï€r2Area of circle of radius 9 In = Ï€(9)2 = Ï€ x 81 , putting value of pi we get= 3.14159625 x 81 = 254.46 sq. In

The area is 254.47 in2

A circle with a radius of 9 feet has an area of 254.47 square feet.

A cylinder with a radius of 5 centimeters and height of 9 centimeters

The answer is 254.469005cm squared

9

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