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A=3.14 1/2d time r2

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Q: How do you find a circles area with its diameter?
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How do you find the area of circles if you have the diameter?

you take the diameter and divide it in half then you have the radius. Take the radius and multiply the radius by its self (radius squared) then multiply by 3.14 (pi) example: Diameter is 24 find the area. 24 divided by 2 is 12 12x12= 144 144x3.14= 452.16


What types of circles are there?

Radius, Diameter, Arc,Seicircle, Circumference and area.


How do you find the surface area of a circle?

you find the surface area of a circle by first finding the area of the circles/ two ends. you do this by multiplying the diameter by pi then multiply by two, that is both ends put together then you find the area of the flat part by finding out the circumference of the circle ends, then multiply that by the height of the cylinder. circumference= pi times the diameter then add all your calculation together, and you have the surface area of your cylinder :)


What would the diameter of two circles of equal size be relative to the diameter of one circle of equal area?

it would be the diameter of the smaller circle times sqrt 2


How do I figure the area of a circle by diameter?

To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)


How is pi used to find circumference of circles?

Pi times the diameter of a circle gives its circumference.


How do you find diameter of a circle with the area of 58.69?

Diameter is 8.64444


How do you find the area using the diameter?

I assume that you are referring to the area of a circle. You divide the diameter in half to find the radius and then you put it into the formula.


How can pi be used?

Pi (3.141...) is used for circles, and circles only. You use it to find the area and circumfrence.


How do you find the area of a diameter?

A diameter is a line. A single line cannot enclose a space, and thus has no area.


How is pi used to find the circumference of circles?

Circumference of any circle = 2*pi*radius or pi*diameter


Find the area of a circle with a diameter of 6?

The area of a circle with a diameter of 6 units is: 28.27 square units.