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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.

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โˆ™ 2012-05-14 13:43:51
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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

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Q: How did the Romans work out the area of a circle?
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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.

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

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.

Is a sector area the percentage of the circle's area?

Yes. That is often how pie charts work.

Does the area of a sector depend pi?

The area sector of a circle needs pi to work it out.

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

Why does the formula to find area of a circle always work?

a formula is alway correct

How do you find the area of a circle if the circle is 8cm?

Area of a circle = pi*radius2

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