Area of circle is pi x radius squared
Circumference is p x diameter
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∙ 13y agoTrigonometric equations often have infinitely many solutions, due to the periodicity of the functions. Take a simple example, sin x = 0. This equation is satisfied by an angle of zero, but also by an angle of pi, 2 x pi, 3 x pi, etc. (this is in radians; the equivalent in degrees would be 0°, 180°, 360°, etc.). Once you find two base solutions (in this case 0 and pi), repeatedly adding the length of the period (in this case, 2 pi, equivalent to 360°) will give you additional solutions.
Area = pi R2Circumference = 2 pi RArea/Circumference = pi R2/2pi R = 1/2 R
If you're looking for the volume of the cylinder, use the formula:Area*height = (pi*radius2)*heightto find the radius you just divide the diameter by 2.Using your values:Volume=[pi*(18/2)2] * 18 = 1458*pi = 4580.44If you're looking for the surface area, use the formula:Surface Area = circumference*height + 2(Flat area) = pi*diameter*height + 2(pi*radius2)Using your values:Surface Area = pi*18*18+2[pi*(18/2)2] = 324*pi + 2*1458*pi = 3240*pi = 10179
a=pi r²a=pi (d/2)²
Circumference of a circle = 2*pi*radius or diameter*pi
Here are the three circle equations, in words and equations. Circumfwerence - pi X diameter C = pi d Circumference = two X pi X radius C = 2pi r Area = pi X radius squared A = pi r^(2) NB It is only the radial value that is squared ; NOT 'pi'. NB pi is a constant at 3.141592..., usually approximated to 3.14 or 3.1416.
Pi is 3.14159265415.... and so on and so forth. Pi is more commonly used as 3.14 in equations.
Einstein may have used pi (Ï€)in his equations but he had no involvement in the creation or application of pi.
Remember the circle equations. A = pi r^2 C = 2 pi r = pi d ( Hence d = 2r) Algebraically rarranging r = sqrt(A/pi) 2r = d = 2(sqrt(A/pi)) Hence d = 2(sqrt(28.26 / 3.141592...)) d = 2(sqrt(8.99543....) d = 2(2.999239...) d = 5.99847.... ~ 6 The answer!!!!!
Area = pi R2Circumference = 2 pi RArea/Circumference = pi R2/2pi R = 1/2 R
Trigonometric equations often have infinitely many solutions, due to the periodicity of the functions. Take a simple example, sin x = 0. This equation is satisfied by an angle of zero, but also by an angle of pi, 2 x pi, 3 x pi, etc. (this is in radians; the equivalent in degrees would be 0°, 180°, 360°, etc.). Once you find two base solutions (in this case 0 and pi), repeatedly adding the length of the period (in this case, 2 pi, equivalent to 360°) will give you additional solutions.
If you're looking for the volume of the cylinder, use the formula:Area*height = (pi*radius2)*heightto find the radius you just divide the diameter by 2.Using your values:Volume=[pi*(18/2)2] * 18 = 1458*pi = 4580.44If you're looking for the surface area, use the formula:Surface Area = circumference*height + 2(Flat area) = pi*diameter*height + 2(pi*radius2)Using your values:Surface Area = pi*18*18+2[pi*(18/2)2] = 324*pi + 2*1458*pi = 3240*pi = 10179
circumference of a circle = pi*diameter or 2*pi*radius
Circumference of a circle = 2*pi*radius or diameter*pi
a=pi r²a=pi (d/2)²
Using 3.14 as Pi the area of circle is: 314.0
area of a circle is equal to pi times the square of its radius.. A=(pi)r^2