To find the diameter of a circle with an area of 254 cm², you first need to calculate the radius. The formula for the area of a circle is A = πr², where A is the area and r is the radius. So, 254 = πr². Solving for r gives you r ≈ √(254/π) ≈ 9 cm. The diameter of a circle is twice the radius, so the diameter of this circle is approximately 18 cm.
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Circle area = (pi)r2 = 254
r2 = 254/pi
r = √254/pi ≈ 9
2r = diameter = 2(9) = 18 cm
A circle with a diameter of 8.5 cm has an area of 56.75 square cm
The area of circle that has a diameter of 6.5 cm is: 33.18 cm2
The area of a circle that has diameter of 3 cm is: 7.069 cm2
For a circle with a diameter of 100 cm, the area is ≈ 9,503.32 cm2
Area of a circle in square cm = pi*radius2