You need to know the radius first. Next you simply double the radius to get the diameter and then multiply that by pie and you have now worked out the circumference of your circle :)
4 to the second power is 16 and pie is always 3.14 so pie times radius so multiply 3.14 and 16 and that is your answer 50.24 answer
radius = 1, C=2(pie)r
you take the radius and multiply it by itself. then you multiply the radius squared by 3.14 to get the area of a circle...
4.
Divide the diameter by 2 to get the radius then square the radius, and finally multiply by pie (3.14)
You need to know the radius first. Next you simply double the radius to get the diameter and then multiply that by pie and you have now worked out the circumference of your circle :)
Solve the equation for the area of the circle (area = pi x radius2) for radius. Multiply the radius by 2 to obtain the diameter.
4 to the second power is 16 and pie is always 3.14 so pie times radius so multiply 3.14 and 16 and that is your answer 50.24 answer
radius = 1, C=2(pie)r
you take the radius and multiply it by itself. then you multiply the radius squared by 3.14 to get the area of a circle...
4.
circumference of a circle = 2*pi*radius area of a circle = pi*radius squared
you simply multiply the radius by 2 and multiply that by 3.14159
you take the radius which is half of the diameter to the second power then multiply that to pie, which is usually 3.14 but if you look at a calculator their is actually a pie button that is more exact also.
The radius is 18.
Multiply the radius by 2.