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What is the diameter of a circle if the area is 81pi?
18
What is the diameter of a circle if the circumference is 18?
The diameter of a circle with a circumference of 18 is: 5.73
What is linear foot of 18ft diameter circle?
A linear foot is the same as a foot. So, an 18-foot diameter circle would measure 18 linear feet in diameter!
What is the area of a circle whose radius is 18 cm?
Well, darling, the area of a circle is calculated using the formula A = πr^2, where r is the radius. So, plugging in 18 cm for the radius, we get A = π(18)^2 = 324π cm². So, the area of a circle with a radius of 18 cm is 324π square centimeters. Voilà!
What is the area of a circle with a diameter of 18 cm?
To find area of a circle, the formula is πr2 where π is pi. Half of the diameter is the radius (r) so you divide 18 by 2 to get the radius (9). then, you square it (multiply it by itself) giving you 81. You then multiply this by pi to get the area. The exact answer is 81π, with a good approximation of: 254.46900494077325231547411404563973361997072134938357149897
