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Area of a circle = pi*radius2 measured out in square units
for pi use this number 3.14159
and remember the radius of a circle = half the diameter.
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Thus a circle with a 10 inch diameter would have an area of:
Radius = diamiter/2, which is 10/2= 5
3.14159 * (5*5) = 78.53975 square inches
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What is the radius and the area of a circle?
The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.
What is the area of a circle that has a radius of 5 cm?
YOU FUKIIING MORONS GET YOUR AZZ TO WORK AND FIGURE THIS OUT BY YOURSELF FUKIIING BITCES
How do you find the area of a shaded circle and the area of an unshaded circle on that is inside the other circle?
To find the area of the circle pi*radius*squared and subtract the area of the figure inside
Is the circumference and area of a circle the same?
The circumference of a circle is the distance arround the edge of the circle. The area of a circle is how big the inside of the circle is.
How do you find the diamter of a circle if you know the area?
In order to find the diameter of a circle if you have the area is to rearrange the formula for the area of a circle to put diameter as the unknown, like so: PIE*d = Area of a Circle d = (Area of a Circle) / PIE Therefore if the area of your circle is 40cm, 40/PIE = 12.73cm and that's the diameter.
How do you work out the area of a circle with only the diameter?
By dividing the diameter by 2 will give the circle's radius. Area of any circle = pi*radius squared.
How do you work out the area of a cycle?
Area of any circle = pi*radius squared
What is the radius and the area of a circle?
The radius of a circle is the distance from the center to any point on the circle. The area is the space within the circle. The formula to find the area is πr2. r stands for the radius of the circle. If you want to find the radius, you can work backwards from the area or the circumference, which is the perimeter of the circle. The formula for circumference is 2πr.
How do you work out the area of a circle on excel?
Area of circle = PI * R2In A1 enter radius of circle (e.g. 4).In B1 enter this formula: =PI()*A1^2Observe in B1 the number as the area of a circle with radius of 4.
Why does the formula for area of a circle work?
It says so in the formula
How do you work out the area of circle?
Pi times the square of the radius.
How do you work out the area of a quarter of a circle?
It is: (pi*radius2)/4
Does the area of a sector depend pi?
The area sector of a circle needs pi to work it out.
Is a sector area the percentage of the circle's area?
Yes. That is often how pie charts work.
How do you measure the area of a circle and why does it work?
The area of a circle is equal to that of a triangle whose base has the length of the circle's circumference (distance around the circle) and whose height equals the circle's radius which comes to Pi multiplied by the radius squared. Area of Triangle 1/2 *base*height
How did the Romans work out the area of a circle?
The area of a circle is the number of square units inside that circle, if each square in the circle to the left has an area of 1cm2, you could count the total number of squares to get the area of this circle. However, it is easier to use one the following formulas; A=.r²or A=pi times r times r, where A is the area and r is the radius.
Why does the formula to find area of a circle always work?
a formula is alway correct
